APA ציטוט

Crow, J. F. (1998). 90 years ago: The beginning of hybrid maize.

Citação norma Chicago

Crow, J F. 90 Years Ago: The Beginning of Hybrid Maize. 1998.

ציטוט MLA

Crow, J F. 90 Years Ago: The Beginning of Hybrid Maize. 1998.