Dyfyniad APA

Pettigrew, A. (1989). Longitudinal Methods to Study Change: Theory and Practice. Routledge.

Dyfyniad Arddull Chicago

Pettigrew, A. Longitudinal Methods to Study Change: Theory and Practice. Routledge, 1989.

Dyfyniad MLA

Pettigrew, A. Longitudinal Methods to Study Change: Theory and Practice. Routledge, 1989.

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