Dyfyniad APA

Heck, E. T. (1973). A guide to mental health services. University of Pittsburgh Press.

Dyfyniad Arddull Chicago

Heck, Edward T. A Guide to Mental Health Services. [Pittsburgh]: University of Pittsburgh Press, 1973.

Dyfyniad MLA

Heck, Edward T. A Guide to Mental Health Services. University of Pittsburgh Press, 1973.

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