APA (7th ed.) Citation

Greenberg, M. J., & Harper, J. R. (1981). Algebraic topology: A first course. Benjamin-Cummings.

Chicago Style (17th ed.) Citation

Greenberg, Marvin Jay, and John R. Harper. Algebraic Topology: A First Course. Londres: Benjamin-Cummings, 1981.

MLA (9th ed.) Citation

Greenberg, Marvin Jay, and John R. Harper. Algebraic Topology: A First Course. Benjamin-Cummings, 1981.