Cita APA (7a ed.)

Williams, L. R., & Fromberg, D. P. (2012). Encyclopedia of early childhood education. Routledge.

Cita Chicago Style (17a ed.)

Williams, Leslie R., y Doris Pronin Fromberg. Encyclopedia of Early Childhood Education. London ; New York: Routledge, 2012.

Cita MLA (9a ed.)

Williams, Leslie R., y Doris Pronin Fromberg. Encyclopedia of Early Childhood Education. Routledge, 2012.