APA (7th ed.) Citation

Poerba, R. (1976). Berguna Di Masa Depan. Firma Madju Medan.

Chicago Style (17th ed.) Citation

Poerba, R.L.Tel. Berguna Di Masa Depan. Firma Madju Medan, 1976.

MLA (8th ed.) Citation

Poerba, R.L.Tel. Berguna Di Masa Depan. Firma Madju Medan, 1976.

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