Citazione Stile APA (7a Edizione)

Boas, R. P., & Boas, H. P. (1996). A primer of real functions (4th ed.). Mathematical Association of America.

Citazione stile Chigago Style (17a edizione)

Boas, Ralph P., e Harold P. Boas. A Primer of Real Functions. 4th ed. [Washington, D.C.]: Mathematical Association of America, 1996.

Citatione MLA (9a ed.)

Boas, Ralph P., e Harold P. Boas. A Primer of Real Functions. 4th ed. Mathematical Association of America, 1996.