Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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