APA (7. basım) Alıntı

Koch, H. L. (1966). Twins and twin relations. University of Chicago Press.

Chicago Style (17. basım) Atıf

Koch, Helen Lois. Twins and Twin Relations. Chicago: University of Chicago Press, 1966.

MLA (9th ed.) Atıf

Koch, Helen Lois. Twins and Twin Relations. University of Chicago Press, 1966.