APA (7th ed.) Citation

Hanna, P. R., Kohn, C. F., & Steeg, C. L. V. (1970). History: Modular learning unit (Regional studies.). Scott, Foresman.

Chicago Style (17th ed.) Citation

Hanna, Paul R., Clyde F. Kohn, and Clarence L. Ver Steeg. History: Modular Learning Unit. Regional studies. Glenview, Ill: Scott, Foresman, 1970.

MLA (9th ed.) Citation

Hanna, Paul R., et al. History: Modular Learning Unit. Regional studies. Scott, Foresman, 1970.