Cita APA

Feder, G., Eccles, M., Grol, R., Griffiths, C., & Grimshaw, J. (1999). Using clinical guidelines. British Medical Journal.

Chicago Style Citation

Feder, Gene, Martin Eccles, Richard Grol, Chris Griffiths, i Jeremy Grimshaw. Using Clinical Guidelines. British Medical Journal, 1999.

Cita MLA

Feder, Gene, et al. Using Clinical Guidelines. British Medical Journal, 1999.