<TJAHJANA, J. &. J. S. Hidrologi ( 1 ). PUK Petra.
Chicago Style (17th ed.) Citation<TJAHJANA, Johny & J. Syaranamual>. Hidrologi ( 1 ). PUK Petra.
MLA (8th ed.) Citation<TJAHJANA, Johny & J. Syaranamual>. Hidrologi ( 1 ). PUK Petra.
Warning: These citations may not always be 100% accurate.