(a) Books
McVicar, J. (2010). Grow herbs. London: DK.
(b) Journals
BOWLER, I.. (2002). Developing Sustainable Agriculture. Geography, 87(3), 205–212. Retrieved from http://www.jstor.org/stable/40573736Copy
Platt, P. (2016). Vertical Farming: An Interview with Dickson Despommier. Gastronomica, 80-87.
(c) Websites
- D. P. (2001). Unfortunately, Perfect Soil Is Made, Not Born. Retrieved March 01, 2016, from http://articles.dailypress.com/2001-05-27/features/0105250579_1_soil-organic-matter-humus
- G. R., & M. S. (2016). Potassium for crop production. Retrieved January 22, 2016, from http://www.extension.umn.edu/agriculture/nutrient-management/potassium/potassium-for-crop-production/
- Hawaii, U. O. (2016). Essential Nutrients. Retrieved January 22, 2016, from http://www.ctahr.hawaii.edu/mauisoil/c_nutrients.aspx
- Lamb, J. A., Fernandez, F. G., & Kaiser, D. E. (2016). Understanding nitrogen in soils. Retrieved January 22, 2016, from http://www.extension.umn.edu/agriculture/nutrient-management/nitrogen/understanding-nitrogen-in-soils/
- Krishnamurthy, R. (2014, July 24). Vertical Farming: Singapore's Solution to Feed the Local Urban Population. Retrieved January 20, 2016, from http://permaculturenews.org/2014/07/25/vertical-farming-singapores-solution-feed-local-urban-population/
- L. B., J. L., G. R., G. R., & M. S. (2016). The nature of phosphorus in soils. Retrieved January 22, 2016, from http://www.extension.umn.edu/agriculture/nutrient-management/phosphorus/the-nature-of-phosphorus/
- Management, S. F. (2016). Magnesium in plants and soil. Retrieved January 22, 2016, from http://www.smart-fertilizer.com/articles/magnesium
- Management, S. F. (2016). Iron Nutrition in Plants. Retrieved January 22, 2016, from http://www.smart-fertilizer.com/articles/iron
- S. A. (2016). Agronomic Library. Retrieved January 26, 2016, from http://www.spectrumanalytic.com/support/library/ff/Ca_Basics.htm
- System, V. (2016). Advantages of Vertical Farming. Retrieved January 20, 2016, from http://www.verticalfarms.com.au/advantages-vertical-farming
- O. (2016). Welcome to the Purdue OWL. Retrieved February 22, 2016, from https://owl.english.purdue.edu/owl/resource/656/1/
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