APA (7th ed.) Citation

Harahap, A. E. (1966). Hitung dagang. Effendi Harahap Publ.

Chicago Style (17th ed.) Citation

Harahap, A. Effendi. Hitung Dagang. Effendi Harahap Publ, 1966.

MLA (8th ed.) Citation

Harahap, A. Effendi. Hitung Dagang. Effendi Harahap Publ, 1966.

Warning: These citations may not always be 100% accurate.