Citazione APA

Hartzog, H. S., & Ernst, D. (1936). Webster language: A combined workbook & textbook. Webster Publishing Company.

Stile di citazione Chicago

Hartzog, Henry S., e Dora Ernst. Webster Language: A Combined Workbook & Textbook. Saint Louis: Webster Publishing Company, 1936.

Citazione MLA

Hartzog, Henry S., e Dora Ernst. Webster Language: A Combined Workbook & Textbook. Webster Publishing Company, 1936.