Cita APA (7a ed.)

Harper, P. S. (1998). Practical genetic counselling (5th ed.). Butterworth-Heinemann.

Cita Chicago Style (17a ed.)

Harper, Peter S. Practical Genetic Counselling. 5th ed. Oxford [etc.]: Butterworth-Heinemann, 1998.

Cita MLA (9a ed.)

Harper, Peter S. Practical Genetic Counselling. 5th ed. Butterworth-Heinemann, 1998.