Cita APA (7th ed.)

Parry, G., & Watts, F. N. (1989). Behavioural and mental health research: A handbook of skills and methods. LEA.

Cita Chicago (17th ed.)

Parry, Glenys, i Fraser N. Watts. Behavioural and Mental Health Research: A Handbook of Skills and Methods. Hove: LEA, 1989.

Cita MLA (9th ed.)

Parry, Glenys, i Fraser N. Watts. Behavioural and Mental Health Research: A Handbook of Skills and Methods. LEA, 1989.