Coccaro, E. F., & Jacobson, K. C. (2006). PennTwins: A Population-Based Cohort for Twin Studies. Twin Res Hum Genet.
Chicago Style CitationCoccaro, Emil F., i Kristen C. Jacobson. "PennTwins: A Population-Based Cohort for Twin Studies." Twin Res Hum Genet 2006.
Cita MLACoccaro, Emil F., i Kristen C. Jacobson. "PennTwins: A Population-Based Cohort for Twin Studies." Twin Res Hum Genet 2006.
Atenció: Aquestes cites poden no estar 100% correctes.