Tulin, A. B. (2008). Application of macro and micronutrients increases purple yam yield. Agriculture.
Citazione stile Chigago Style (17a edizione)Tulin, Anabella B. "Application of Macro and Micronutrients Increases Purple Yam Yield." Agriculture 2008.
Citatione MLA (9a ed.)Tulin, Anabella B. "Application of Macro and Micronutrients Increases Purple Yam Yield." Agriculture, 2008.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.