APA (7th ed.) Citation

(2003). Knots (2., rev. and extended ed.). <<de>> Gruyter.

Chicago Style (17th ed.) Citation

Knots. 2., rev. and extended ed. Berlin [u.a.]: <<de>> Gruyter, 2003.

MLA (9th ed.) Citation

Knots. 2., rev. and extended ed. <<de>> Gruyter, 2003.