APA (7th ed.) Citation

Arkowitz, M., & Curjel, C. R. (1967). Groups of homotopy classes: Rank formulas and homotopy-commutativity (2a. ed.). Springer.

Chicago Style (17th ed.) Citation

Arkowitz, Martín, and Caspar R. Curjel. Groups of Homotopy Classes: Rank Formulas and Homotopy-commutativity. 2a. ed. Berlin: Springer, 1967.

MLA (9th ed.) Citation

Arkowitz, Martín, and Caspar R. Curjel. Groups of Homotopy Classes: Rank Formulas and Homotopy-commutativity. 2a. ed. Springer, 1967.