APA (7th ed.) Citation

Ginn and Company & Johnson, K. (1979). Ginn language program. Ginn.

Chicago Style (17th ed.) Citation

Ginn and Company and Ken Johnson. Ginn Language Program. Lexington, Mass.: Ginn, 1979.

MLA (8th ed.) Citation

Ginn and Company and Ken Johnson. Ginn Language Program. Ginn, 1979.