APA (7th ed.) Citation

Marzillier, J. S. (1987). What is clinical psychology? Oxford Univ. Pr.

Chicago Style (17th ed.) Citation

Marzillier, John S. What Is Clinical Psychology? Oxford [u.a.]: Oxford Univ. Pr, 1987.

MLA (8th ed.) Citation

Marzillier, John S. What Is Clinical Psychology? Oxford Univ. Pr, 1987.