Arkowitz, M., & Curjel, C. R. (1967). Groups of homotopy classes: Rank formulas and homotopy-commutativity. Springer-Verlag.
Chicago Style (17th ed.) CitationArkowitz, M., and C. R. Curjel. Groups of Homotopy Classes: Rank Formulas and Homotopy-commutativity. Berlin, New York: Springer-Verlag, 1967.
MLA (9th ed.) CitationArkowitz, M., and C. R. Curjel. Groups of Homotopy Classes: Rank Formulas and Homotopy-commutativity. Springer-Verlag, 1967.
Warning: These citations may not always be 100% accurate.