Dyfyniad APA

Feldman, R. S., & Babu, N. (2011). Discovering the Life Span. Pearson Education India.

Dyfyniad Arddull Chicago

Feldman, Robert S., and Nandita Babu. Discovering the Life Span. New Delhi: Pearson Education India, 2011.

Dyfyniad MLA

Feldman, Robert S., and Nandita Babu. Discovering the Life Span. Pearson Education India, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.