Cita APA (7th ed.)

Carpenter, T. P., Moser, J. M., & Romberg, T. A. (1982). Addition and subtraction: A cognitive perspective. Lawrence Earlbaum Associates.

Cita Chicago (17th ed.)

Carpenter, Thomas P., James M. Moser, i Thomas A. Romberg. Addition and Subtraction: A Cognitive Perspective. Hillsdale, NJ: Lawrence Earlbaum Associates, 1982.

Cita MLA (9th ed.)

Carpenter, Thomas P., et al. Addition and Subtraction: A Cognitive Perspective. Lawrence Earlbaum Associates, 1982.