Παραπομπή APA

Salkind, N. J. (2004). An introduction to theories of human development. Sage.

Παραπομπή Chicago Style

Salkind, Neil J. An Introduction to Theories of Human Development. New Delhi: Sage, 2004.

Παραπομπή MLA

Salkind, Neil J. An Introduction to Theories of Human Development. Sage, 2004.