Citazione Stile APA (7a Edizione)

Clark, G., Forbes, D., & Johns, G. (1975). On the concept of welfare. Institute of British Geographers.

Citazione stile Chigago Style (17a edizione)

Clark, G., D. Forbes, e G. Johns. On the Concept of Welfare. Institute of British Geographers, 1975.

Citatione MLA (9a ed.)

Clark, G., et al. On the Concept of Welfare. Institute of British Geographers, 1975.