APA (7e ed.) Bronvermelding

Carpenter, T. p., Fennema, E., Franke, M. L., Levi, L., & Empson, S. B. Children's mathematics: Cognitively guided instruction (2a ed.).

Chicago (17e ed.) Bronvermelding

Carpenter, Thomas páginas, Elizabeth Fennema, Megan Loef Franke, Linda Levi, en Susan B. Empson. Children's Mathematics: Cognitively Guided Instruction. 2a ed.

MLA (8e ed.) Bronvermelding

Carpenter, Thomas páginas, et al. Children's Mathematics: Cognitively Guided Instruction. 2a ed.