एपीए उद्धरण

Johnson, F. (2011). Syzygies and homotopy theory. Springer.

शिकागो स्टाइल उद्धरण

Johnson, F.E.A. Syzygies and Homotopy Theory. New York: Springer, 2011.

एमएलए उद्धरण

Johnson, F.E.A. Syzygies and Homotopy Theory. Springer, 2011.