PATTY, O., & PATTY, O. Diktat Tenaga Air O.f. Patty. Universitas Kristen Petra.
Chicago Style (17th ed.) CitationPATTY, O.F, and O.F PATTY. Diktat Tenaga Air O.f. Patty. Universitas Kristen Petra.
MLA引文PATTY, O.F, and O.F PATTY. Diktat Tenaga Air O.f. Patty. Universitas Kristen Petra.
警告：这些引文格式不一定是100％准确.