Cita APA (7a ed.)

Engel, C. E. (1990). Continuing education for change. World Health Organization. Regional Office for Europe.

Cita Chicago Style (17a ed.)

Engel, Charles E. Continuing Education for Change. Copenhagen: World Health Organization. Regional Office for Europe, 1990.

Cita MLA (9a ed.)

Engel, Charles E. Continuing Education for Change. World Health Organization. Regional Office for Europe, 1990.