APA (7e ed.) Bronvermelding

Welsh, D. J. A. (1993). Complexity: Knots, colourings, and counting. Cambridge University Press.

Chicago (17e ed.) Bronvermelding

Welsh, D. J. A. Complexity: Knots, Colourings, and Counting. Cambridge: Cambridge University Press, 1993.

MLA (9e ed.) Bronvermelding

Welsh, D. J. A. Complexity: Knots, Colourings, and Counting. Cambridge University Press, 1993.