APA (7th ed.) Citation

Siagian, S. P. Fungsi-fungsi Manajerial. Bumi Aksara.

Chicago Style (17th ed.) Citation

Siagian, Sondang P. Fungsi-fungsi Manajerial. Bumi Aksara.

MLA (8th ed.) Citation

Siagian, Sondang P. Fungsi-fungsi Manajerial. Bumi Aksara.

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