APA Style

SERIES, Y, B. ([sa]). Hidrology : ikhtisar, soal-soal ujian dan penyelesaian . Indonesia: Yustadi Book Series.

MLA Style

SERIES, YUSTADI, BOOK. "Hidrology : ikhtisar, soal-soal ujian dan penyelesaian". Indonesia: Yustadi Book Series, [sa]. Text.