Gaya APA
PM, O, S. et al (2007).
(E) The Premenstrual Syndromes .
America:
Distributed in North and South America by Taylor & Francis.
Gaya MLA
PM, O'brien, Shaughn. et al.
"(E) The Premenstrual Syndromes".
America:
Distributed in North and South America by Taylor & Francis,
2007.
Text.