APA (7th ed.) Citation

HARAHAP, A. E. (1978). Ilmu hitung dagang 5. Effendiharahap Publishing Coy.

Chicago Style (17th ed.) Citation

HARAHAP, A. Effendi. Ilmu Hitung Dagang 5. Semarang: Effendiharahap Publishing Coy, 1978.

MLA (9th ed.) Citation

HARAHAP, A. Effendi. Ilmu Hitung Dagang 5. Effendiharahap Publishing Coy, 1978.

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