एपीए उद्धरण

Lefschetz, S. (1942). Algebraic topology. New York City: American Mathematical Society.

शिकागो स्टाइल उद्धरण

Lefschetz, Solomon. Algebraic Topology. New York City: American Mathematical Society, 1942.

एमएलए उद्धरण

Lefschetz, Solomon. Algebraic Topology. New York City: American Mathematical Society, 1942.