APA (7th ed.) Citation

Guth, H. P. (1977). American English today (2nd ed., rev.). Webster Division/McGraw-Hill.

Chicago Style (17th ed.) Citation

Guth, Hans Paul. American English Today. 2nd ed., rev. New York: Webster Division/McGraw-Hill, 1977.

MLA (8th ed.) Citation

Guth, Hans Paul. American English Today. 2nd ed., rev. Webster Division/McGraw-Hill, 1977.