APA način citiranja (7. izdanje)

Elec, B. M., Lerios, M. C., Belarmino, M. C., & Velasquez, G. A. (1999). Personalized system of instruction (PSI) for college algebra. Learning Resource Center, University of the Philippines.

Čikaški stil citiranja (17. izdanje)

Elec, Bernarda M., Marcelina C. Lerios, Myrna C. Belarmino, i Gemma A. Velasquez. Personalized System of Instruction (PSI) for College Algebra. Quezon City: Learning Resource Center, University of the Philippines, 1999.

MLA način citiranja (9. izdanje)

Elec, Bernarda M., et al. Personalized System of Instruction (PSI) for College Algebra. Learning Resource Center, University of the Philippines, 1999.