Tulin, A. B. (2008). Application of macro and micronutrients increases purple yam yield. Agriculture.
芝加哥风格引文Tulin, Anabella B. "Application of Macro and Micronutrients Increases Purple Yam Yield." Agriculture 2008.
MLA引文Tulin, Anabella B. "Application of Macro and Micronutrients Increases Purple Yam Yield." Agriculture, 2008.
警告：这些引文格式不一定是100％准确.