Cita APA (7a ed.)

Harper, P. S. (1994). Practical genetic counselling (4th ed. repr.). Butterworth-Heinemann.

Cita Chicago Style (17a ed.)

Harper, Peter S. Practical Genetic Counselling. 4th ed. repr. Oxford: Butterworth-Heinemann, 1994.

Cita MLA (9a ed.)

Harper, Peter S. Practical Genetic Counselling. 4th ed. repr. Butterworth-Heinemann, 1994.