Gaya APA

Rapkin, P, O, A, J. (2007). The Premenstrual Syndromes : PMS and PMDD . : Informa Healthcare.

Gaya MLA

Rapkin, PM.Shaughn, O'Brien;, Andrea, J.. "The Premenstrual Syndromes : PMS and PMDD". : Informa Healthcare, 2007. Text.