APA (7th ed.) Citation

Carpenter, T. P., Fennema, E., & Romberg, T. A. (1993). Rational numbers: An integration of research. Lawrence Erlbaum Associates.

Chicago Style (17th ed.) Citation

Carpenter, Thomas P., Elizabeth Fennema, and Thomas A. Romberg. Rational Numbers: An Integration of Research. Hillsdale, N.J.: Lawrence Erlbaum Associates, 1993.

MLA (9th ed.) Citation

Carpenter, Thomas P., et al. Rational Numbers: An Integration of Research. Lawrence Erlbaum Associates, 1993.