Cita APA (7a ed.)

Bereczkei, T., & Dunbar, R. (2002). Helping-at-the-nest and sex-biased parental investment in a Hungarian Gypsy population.

Cita Chicago Style (17a ed.)

Bereczkei, T., y R. Dunbar. Helping-at-the-nest and Sex-biased Parental Investment in a Hungarian Gypsy Population. 2002.

Cita MLA (9a ed.)

Bereczkei, T., y R. Dunbar. Helping-at-the-nest and Sex-biased Parental Investment in a Hungarian Gypsy Population. 2002.