APA-ийн эшлэл(7 дахь хэвлэлт)

Metcalf. (2012). WASTEWATER ENGINEERING: TREATMENT AND REUSE (4 TH.). TMH.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Metcalf. WASTEWATER ENGINEERING: TREATMENT AND REUSE. 4 TH. NEW DELHI: TMH, 2012.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Metcalf. WASTEWATER ENGINEERING: TREATMENT AND REUSE. 4 TH. TMH, 2012.