Rossi, R. M. (2003). Influence of age gap and parents´ ethnicity on the sex of the first born child. Universidade Estadual da Paraíba.
Chicago-Zitierstil (17. Ausg.)Rossi, Robson Marcelo. Influence of Age Gap and Parents´ Ethnicity on the Sex of the First Born Child. Universidade Estadual da Paraíba, 2003.
MLA-Zitierstil (9. Ausg.)Rossi, Robson Marcelo. Influence of Age Gap and Parents´ Ethnicity on the Sex of the First Born Child. Universidade Estadual da Paraíba, 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.