Cita APA (7a ed.)

Ainslie, R. C. (1985). The psychology of twinship. University of Nebraska Pr.

Cita Chicago Style (17a ed.)

Ainslie, Ricardo C. The Psychology of Twinship. Lincoln u.a: University of Nebraska Pr, 1985.

Cita MLA (8a ed.)

Ainslie, Ricardo C. The Psychology of Twinship. University of Nebraska Pr, 1985.