APA引文

(1999). Personalized system of instruction (PSI)for college algebra. Learning Resource Center.

Chicago Style (17th ed.) Citation

Personalized System of Instruction (PSI)for College Algebra. Quezon City: Learning Resource Center, 1999.

MLA引文

Personalized System of Instruction (PSI)for College Algebra. Learning Resource Center, 1999.

警告：這些引文格式不一定是100％准確.