APA (7 ম সংস্করণ) উদ্ধৃতি

Caoili, E. M. (1968). Role of the principal as perceived by teachers, principals, and district supervisors. s.n.].

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Caoili, Eulogio M. Role of the Principal as Perceived by Teachers, Principals, and District Supervisors. [Quezon City: s.n.], 1968.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Caoili, Eulogio M. Role of the Principal as Perceived by Teachers, Principals, and District Supervisors. s.n.], 1968.