Παραπομπή σε μορφή APA (7η εκδ.)

Flapan, E. (2016). Knots, molecules, and the universe: An introduction to topology. American Mathematical Society.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Flapan, Erica. Knots, Molecules, and the Universe: An Introduction to Topology. Providence, Rhode Island: American Mathematical Society, 2016.

Παραπομπή σε μορφή MLA (9th εκδ.)

Flapan, Erica. Knots, Molecules, and the Universe: An Introduction to Topology. American Mathematical Society, 2016.