Gaya APA

Ritchie, J, T. (2003). Agronomy journal : an international journal of agriculture and natural resource sciences, vol 95 ist Ed, 2003 . Lincoln: The American Socirty of Agronomy Publishes Agronomy Journal Stanford University Libraries.

Gaya MLA

Ritchie, Joe, T. "Agronomy journal : an international journal of agriculture and natural resource sciences, vol 95 ist Ed, 2003". Lincoln: The American Socirty of Agronomy Publishes Agronomy Journal Stanford University Libraries, 2003. Text.