Cita APA (7th ed.)

Unwin, N. (1997). An introductory study guide to public health and epidemiology. Open Univ. Press.

Cita Chicago (17th ed.)

Unwin, Nigel. An Introductory Study Guide to Public Health and Epidemiology. Buckingham: Open Univ. Press, 1997.

Cita MLA (9th ed.)

Unwin, Nigel. An Introductory Study Guide to Public Health and Epidemiology. Open Univ. Press, 1997.