APA-ийн эшлэл(7 дахь хэвлэлт)
American Water Works Association & ebrary, Inc. (2000). Principles of water rates, fees, and charges (5th ed.). American Water Works Association.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
American Water Works Association ба Inc ebrary. Principles of Water Rates, Fees, and Charges. 5th ed. Denver, Colo.: American Water Works Association, 2000.
MLA -ийн эшлэл (9 дэх хэвлэлт)
American Water Works Association ба Inc ebrary. Principles of Water Rates, Fees, and Charges. 5th ed. American Water Works Association, 2000.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.