APA-viite

Harper, J. E., & Paulsen, G. M. (1969). Nitrogen Assimilation and Protein Synthesis in Wheat Seedlings As Affected by Mineral Nutrition. I. Macronutrients.

Chicago-tyylinen lähdeviittaus

Harper, James E., ja Gary M. Paulsen. Nitrogen Assimilation and Protein Synthesis in Wheat Seedlings As Affected By Mineral Nutrition. I. Macronutrients. 1969.

MLA-viite

Harper, James E., ja Gary M. Paulsen. Nitrogen Assimilation and Protein Synthesis in Wheat Seedlings As Affected By Mineral Nutrition. I. Macronutrients. 1969.

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