APA (7th ed.) Citation

Gregg, E. L. (1914). Studies in English grammar (4th ed., rev.). Cross & Co..

Chicago Style (17th ed.) Citation

Gregg, Eva L. Studies in English Grammar. 4th ed., rev. Cedar Falls, IA: Cross & Co., 1914.

MLA (8th ed.) Citation

Gregg, Eva L. Studies in English Grammar. 4th ed., rev. Cross & Co., 1914.