Harahap, E. (1960). Ilmu memegang buku jilid 1 - A.Effendi Harahap. Effendi Harahap Pub.
Chicago Style (17th ed.) CitationHarahap, EFFENDI. Ilmu Memegang Buku Jilid 1 - A.Effendi Harahap. Effendi Harahap Pub, 1960.
MLA (8th ed.) CitationHarahap, EFFENDI. Ilmu Memegang Buku Jilid 1 - A.Effendi Harahap. Effendi Harahap Pub, 1960.
Warning: These citations may not always be 100% accurate.