APA (7e ed.) Bronvermelding

Bulloch, I. (1992). Patterns: Help your child have fun with maths. Two-Can.

Chicago (17e ed.) Bronvermelding

Bulloch, Ivan. Patterns: Help Your Child Have Fun with Maths. London: Two-Can, 1992.

MLA (9e ed.) Bronvermelding

Bulloch, Ivan. Patterns: Help Your Child Have Fun with Maths. Two-Can, 1992.