Samia, E. S. (1989). The personal and professional characteristics and perspectives of secondary school principals in the National Capital Region of the Philippines.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিSamia, Elizabeth Salvador. The Personal and Professional Characteristics and Perspectives of Secondary School Principals in the National Capital Region of the Philippines. 1989.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিSamia, Elizabeth Salvador. The Personal and Professional Characteristics and Perspectives of Secondary School Principals in the National Capital Region of the Philippines. 1989.
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