Gaya APA

Porter, P, M. (2004). Agronomy journal : an International of agriculture and natural resource sciences, vol.96, 1st Ed, 2004 . Mercu buana: The American Society of Agronomy Publishes Agronomy Journal Stanford University Libraries.

Gaya MLA

Porter, Paul, M. "Agronomy journal : an International of agriculture and natural resource sciences, vol.96, 1st Ed, 2004". Mercu buana: The American Society of Agronomy Publishes Agronomy Journal Stanford University Libraries, 2004. Text.