APA stil citiranja

Gray, B. (1975). Homotopy theory: Homotopy theory : an introduction to algebraic topology. New York: Academic Press.

Chicago stil citiranja

Gray, B. Homotopy theory: Homotopy theory : an introduction to algebraic topology. New York: Academic Press, 1975.

MLA stil citiranja

Gray, B. Homotopy theory: Homotopy theory : an introduction to algebraic topology. New York: Academic Press, 1975.