Cita APA (7th ed.)

Olson, D. R. (1994). The world on paper. Cambridge University Press.

Cita Chicago (17th ed.)

Olson, David R. The World on Paper. Cambridge: Cambridge University Press, 1994.

Cita MLA (9th ed.)

Olson, David R. The World on Paper. Cambridge University Press, 1994.

Atenció: Aquestes cites poden no estar 100% correctes.