Cita APA (7a ed.)

Houghton, P. M., Houghton, T. J., & Pratt, M. M. APA: The easy way! Baker College.

Cita Chicago Style (17a ed.)

Houghton, Peggy M., Timothy J. Houghton, y Michele M. Pratt. APA: The Easy Way! s.l: Baker College.

Cita MLA (9a ed.)

Houghton, Peggy M., et al. APA: The Easy Way! Baker College.