APA引文

Gilfillan, R. R. (1977). Points from letters: Penicillin treatment failure.

Citação norma Chicago

Gilfillan, R R. Points From Letters: Penicillin Treatment Failure. 1977.

MLA引文

Gilfillan, R R. Points From Letters: Penicillin Treatment Failure. 1977.

警告：這些引文格式不一定是100％准確.