Dyfyniad APA

Association for Research in Nervous and Mental Disease. (1973). Biological and environmental determinants of early development: Proceedings of the Association, December 3 and 4, 1971, New York, NY. Williams & Wilkins.

Dyfyniad Arddull Chicago

Association for Research in Nervous and Mental Disease. Biological and Environmental Determinants of Early Development: Proceedings of the Association, December 3 and 4, 1971, New York, NY. Baltimore: Williams & Wilkins, 1973.

Dyfyniad MLA

Association for Research in Nervous and Mental Disease. Biological and Environmental Determinants of Early Development: Proceedings of the Association, December 3 and 4, 1971, New York, NY. Williams & Wilkins, 1973.

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