Παραπομπή APA

Udo, A. A., & Udofia, G. A. (1975). A survey of rural health units. Calabar: Calabar Rural Maternal and Child Health/Family Planning Programme.

Παραπομπή Chicago Style

Udo, Amanam A., and Godwin A. Udofia. A Survey of Rural Health Units. Calabar: Calabar Rural Maternal and Child Health/Family Planning Programme, 1975.

Παραπομπή MLA

Udo, Amanam A., and Godwin A. Udofia. A Survey of Rural Health Units. Calabar: Calabar Rural Maternal and Child Health/Family Planning Programme, 1975.

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