Lua APA (7ú heag.)

Mulingbayan, M. T. Q. Elements of environmental engineering. COE CE dept.

Lua i Stíl Chicago (17ú heag.)

Mulingbayan, Mark Tom Q. Elements of Environmental Engineering. U.P. Diliman: COE CE dept.

Lua MLA (9ú heag.)

Mulingbayan, Mark Tom Q. Elements of Environmental Engineering. COE CE dept.

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