Dyfyniad APA

Newman, B. M., & Newman, P. R. (1987). Development through life a psychosocial approach. Books/ Cole.

Dyfyniad Arddull Chicago

Newman, Barbara M., and Philip R. Newman. Development Through Life a Psychosocial Approach. Books/ Cole, 1987.

Dyfyniad MLA

Newman, Barbara M., and Philip R. Newman. Development Through Life a Psychosocial Approach. Books/ Cole, 1987.

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