Cita APA (7a ed.)

Russell, D. S., & Collins, M. (1972). Elementary algebra (4th. ed.). Allyn and Bacon.

Cita Chicago Style (17a ed.)

Russell, Donald S., y Michael Collins. Elementary Algebra. 4th. ed. Boston: Allyn and Bacon, 1972.

Cita MLA (8a ed.)

Russell, Donald S., y Michael Collins. Elementary Algebra. 4th. ed. Allyn and Bacon, 1972.