Crabb, M. C. (1980). Homotopy theory. Cambridge University Press.
Chicagoスタイル(17版)引用形式Crabb, Michael Charles. Homotopy Theory. Cambridge: Cambridge University Press, 1980.
MLA(9版)引用形式Crabb, Michael Charles. Homotopy Theory. Cambridge University Press, 1980.
警告: この引用は必ずしも正確ではありません.