APA引文

Gregg, I. (1991). Differences between peak flow meters on prescription.

Citação norma Chicago

Gregg, I. Differences between Peak Flow Meters On Prescription. 1991.

MLA引文

Gregg, I. Differences between Peak Flow Meters On Prescription. 1991.

警告：這些引文格式不一定是100％准確.