APA-viite (7. p.)

Letavec, C. J., Rollins, S. C., & Altwies, D. (2008). Program management professional (PgMP): A certification study guide with best practices for maximizing business results. J. Ross Pub..

Chicago-viite (17. p.)

Letavec, Craig J., Steven C. Rollins, ja Diane Altwies. Program Management Professional (PgMP): A Certification Study Guide with Best Practices for Maximizing Business Results. Ft. Lauderdale, Fla.: J. Ross Pub., 2008.

MLA-viite (9. p.)

Letavec, Craig J., et al. Program Management Professional (PgMP): A Certification Study Guide with Best Practices for Maximizing Business Results. J. Ross Pub., 2008.