Gibbs, S., Waters, W. E., & George, C. F. (1989). The benefits of prescription information leaflets (2).
Chicago Style aipamenaGibbs, S., W E. Waters, and C F. George. The Benefits of Prescription Information Leaflets (2). 1989.
MLA aipamenaGibbs, S., W E. Waters, and C F. George. The Benefits of Prescription Information Leaflets (2). 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.