APA (7th ed.) Zitazioa

(2006). The shoelace book: A mathematical guide to the best (and worst) ways to lace your shoes / Burkard Polster.

Chicago Style (17th ed.) Zitazioa

The Shoelace Book: A Mathematical Guide to the Best (and Worst) Ways to Lace Your Shoes / Burkard Polster. 2006.

MLA (9th ed.) Zitazioa

The Shoelace Book: A Mathematical Guide to the Best (and Worst) Ways to Lace Your Shoes / Burkard Polster. 2006.