APA (7th ed.) Citation

Dunning, S., Katterjohn, . E., & Niles, O. S. (1969). Focus. Scott, Foresman & Co..

Chicago Style (17th ed.) Citation

Dunning, Stephen, Elsie Katterjohn, and Olive Stafford Niles. Focus. Glenview, Illinois: Scott, Foresman & Co., 1969.

MLA (9th ed.) Citation

Dunning, Stephen, et al. Focus. Scott, Foresman & Co., 1969.