Cita APA (7th ed.)

Perret, H. E. (1984). Monitoring and evaluation of communication support activities in low-cost sanitation projects. IBRD/World Bank.

Cita Chicago (17th ed.)

Perret, Heli E. Monitoring and Evaluation of Communication Support Activities in Low-cost Sanitation Projects. Washington, D.C: IBRD/World Bank, 1984.

Cita MLA (9th ed.)

Perret, Heli E. Monitoring and Evaluation of Communication Support Activities in Low-cost Sanitation Projects. IBRD/World Bank, 1984.