Citazione Stile APA (7a Edizione)
PETERSEN, D., & ALEXANDER, G. SEASONAL VARIATION IN ADOLESCENT CONCEPTIONS, INDUCED ABORTIONS, AND LATE INITIATION OF PRENATAL CARE.
Citazione stile Chigago Style (17a edizione)
PETERSEN, D.J, e G.R ALEXANDER. SEASONAL VARIATION IN ADOLESCENT CONCEPTIONS, INDUCED ABORTIONS, AND LATE INITIATION OF PRENATAL CARE.
Citatione MLA (9a ed.)
PETERSEN, D.J, e G.R ALEXANDER. SEASONAL VARIATION IN ADOLESCENT CONCEPTIONS, INDUCED ABORTIONS, AND LATE INITIATION OF PRENATAL CARE.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.