Citazione Stile APA (7a Edizione)

Open University, Johnson, J., & Slater, R. (1993). Ageing and later life. Sage Publications.

Citazione stile Chigago Style (17a edizione)

Open University, Julia Johnson, e Robert Slater. Ageing and Later Life. London ; Thousand Oaks, Calif.: Sage Publications, 1993.

Citatione MLA (8a ed.)

Open University, et al. Ageing and Later Life. Sage Publications, 1993.