APA引文

Schneeberger, M., Freeman, A., & Berger, P. (1980). Income and risk for dairymen selecting sires for artificial insemination. BioMed Central.

Citação norma Chicago

Schneeberger, M., AE Freeman, and PJ Berger. Income and Risk for Dairymen Selecting Sires for Artificial Insemination. BioMed Central, 1980.

MLA引文

Schneeberger, M., AE Freeman, and PJ Berger. Income and Risk for Dairymen Selecting Sires for Artificial Insemination. BioMed Central, 1980.

警告：這些引文格式不一定是100％准確.