APA ציטוט

Lefschetz, S. (1949). Introduction to topology. Princeton: Princeton Univ. Press.

Trích dẫn kiểu Chicago

Lefschetz, Solomon. Introduction to Topology. Princeton: Princeton Univ. Press, 1949.

ציטוט MLA

Lefschetz, Solomon. Introduction to Topology. Princeton: Princeton Univ. Press, 1949.