APA引文

Normen & J Norman Efferson. (1953). Principles of farm management. Mc Graw hill book company.

Chicago Edition Citation

Normen and J Norman Efferson. Principles of Farm Management. Mc Graw hill book company, 1953.

MLA引文

Normen and J Norman Efferson. Principles of Farm Management. Mc Graw hill book company, 1953.

警告：這些引文格式不一定是100％准確.