Bereczkei, T., Dunbar, R., & Research, W. F. f. A. (2002). Helping-at-the-nest and sex-biased parental investment in a Hungarian Gypsy population. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)Bereczkei, T., R. Dunbar, agus Wenner-Gren Foundation for Anthropological Research. Helping-at-the-nest and Sex-biased Parental Investment in a Hungarian Gypsy Population. University of Chicago Press, 2002.
Lua MLA (9ú heag.)Bereczkei, T., et al. Helping-at-the-nest and Sex-biased Parental Investment in a Hungarian Gypsy Population. University of Chicago Press, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.