APA ציטוט

Sheffrey, T. (2006). PMP/CAPM exam preparation guide. Hoboken, N.J: Wiley.

Trích dẫn kiểu Chicago

Sheffrey, Thomas. PMP/CAPM Exam Preparation Guide. Hoboken, N.J: Wiley, 2006.

ציטוט MLA

Sheffrey, Thomas. PMP/CAPM Exam Preparation Guide. Hoboken, N.J: Wiley, 2006.