APA (7th ed.) Citation

Culp, E. P. (1965). Keys to good language: A combination text and exercise book. Economy Co..

Chicago Style (17th ed.) Citation

Culp, Elizabeth Price. Keys to Good Language: A Combination Text and Exercise Book. Oklahoma City ; Atlanta [etc.]: Economy Co., 1965.

MLA (8th ed.) Citation

Culp, Elizabeth Price. Keys to Good Language: A Combination Text and Exercise Book. Economy Co., 1965.