APA (7th ed.) Citation

Boas, R. P. (1960). A primer of real functions. The Mathematical Association of America.

Chicago Style (17th ed.) Citation

Boas, Ralph P. A Primer of Real Functions. New York: The Mathematical Association of America, 1960.

MLA (9th ed.) Citation

Boas, Ralph P. A Primer of Real Functions. The Mathematical Association of America, 1960.