Colas, M. F. M. (2023). Career service exam reviewer: Professional & subprofessional level (Second edition.). Brainbox Publishing.
Chicago-referens (17:e uppl.)Colas, Ma. Faye M. Career Service Exam Reviewer: Professional & Subprofessional Level. Second edition. Tacloban City: Brainbox Publishing, 2023.
MLA-referens (9:e uppl.)Colas, Ma. Faye M. Career Service Exam Reviewer: Professional & Subprofessional Level. Second edition. Brainbox Publishing, 2023.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.