Cita APA (7th ed.)

Spitler McKee, J., & Menke Paciorek, K. (1989). Early childhood education 89/90 (10ª ed.). Guilford.

Cita Chicago (17th ed.)

Spitler McKee, Judy, i Karen Menke Paciorek. Early Childhood Education 89/90. 10ª ed. Guilford, 1989.

Cita MLA (9th ed.)

Spitler McKee, Judy, i Karen Menke Paciorek. Early Childhood Education 89/90. 10ª ed. Guilford, 1989.