Dyfyniad APA

(1978). International journal of behavioral development: IJBD. North-Holland.

Dyfyniad Arddull Chicago

International Journal of Behavioral Development: IJBD. Amsterdam, The Netherlands: North-Holland, 1978.

Dyfyniad MLA

International Journal of Behavioral Development: IJBD. North-Holland, 1978.

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