APA (7th ed.) Citation

Parry, G., & Lightbown, R. Presenting problems of gay people seeking help. The theory and practice of homosexuality, 159-164.

Chicago Style (17th ed.) Citation

Parry, Glenys, and Ray Lightbown. "Presenting Problems of Gay People Seeking Help." The Theory and Practice of Homosexuality : 159-164.

MLA (8th ed.) Citation

Parry, Glenys, and Ray Lightbown. "Presenting Problems of Gay People Seeking Help." The Theory and Practice of Homosexuality, , pp. 159-164.