Pettigrew, A. (1989). Longitudinal Methods to Study Change: Theory and Practice. Routledge.
Cita Chicago (17th ed.)Pettigrew, A. Longitudinal Methods to Study Change: Theory and Practice. Routledge, 1989.
Cita MLA (9th ed.)Pettigrew, A. Longitudinal Methods to Study Change: Theory and Practice. Routledge, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.