APA引文

Wynn-Williams, N. (1948). Points from Letters: Treatment of Pneumonia.

Citação norma Chicago

Wynn-Williams, N. Points From Letters: Treatment of Pneumonia. 1948.

MLA引文

Wynn-Williams, N. Points From Letters: Treatment of Pneumonia. 1948.

警告：這些引文格式不一定是100％准確.