APA (7th ed.) Citation

Widmer, E. L. (1970). The critical years: Early childhood education at the crossroads. International Textbook.

Chicago Style (17th ed.) Citation

Widmer, Emmy Louise. The Critical Years: Early Childhood Education at the Crossroads. Scranton: International Textbook, 1970.

MLA (9th ed.) Citation

Widmer, Emmy Louise. The Critical Years: Early Childhood Education at the Crossroads. International Textbook, 1970.