Citazione APA

Griffiths, D. . .., & Griffiths, A. M. . .. (1962). Understanding and enjoyment. Oxford University Press.

Stile di citazione Chicago

Griffiths, D ., e A M. Griffiths. Understanding and Enjoyment. London: Oxford University Press, 1962.

Citazione MLA

Griffiths, D ., e A M. Griffiths. Understanding and Enjoyment. Oxford University Press, 1962.