Dyfyniad APA

Hurlock, . E. B. (1972). Child development (5th ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Hurlock, Elizabeth B. Child Development. 5th ed. Tokyo: McGraw-Hill, 1972.

Dyfyniad MLA

Hurlock, Elizabeth B. Child Development. 5th ed. McGraw-Hill, 1972.

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