Lonergan, W. I. (1927). Eugenics: Problems of sex. America Press.
Chicago Style aipamenaLonergan, William I. Eugenics: Problems of Sex. New York: America Press, 1927.
MLA aipamenaLonergan, William I. Eugenics: Problems of Sex. America Press, 1927.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.