APA (7e ed.) Bronvermelding

Fromberg, D. P., & Williams, L. R. (1992). Encyclopedia of early childhood eduction. Garland Publishing Co..

Chicago (17e ed.) Bronvermelding

Fromberg, Doris Pronin, en Leslie R. Williams. Encyclopedia of Early Childhood Eduction. New York: Garland Publishing Co., 1992.

MLA (9e ed.) Bronvermelding

Fromberg, Doris Pronin, en Leslie R. Williams. Encyclopedia of Early Childhood Eduction. Garland Publishing Co., 1992.