(1968). Ilmu memegang buku. Semarang: EffendiHarahap Publishing Coy.
Chicago Style CitationIlmu Memegang Buku. Semarang: EffendiHarahap Publishing Coy, 1968.
MLA CitationIlmu Memegang Buku. Semarang: EffendiHarahap Publishing Coy, 1968.
Warning: These citations may not always be 100% accurate.