APA

Olson W. C., Lee J. R. & Olson W. C. (1994). The theory and practice of international relations. London: Prentice-Hall International.

Chicago

Olson William C, Lee James R and Olson William C. 1994. The theory and practice of international relations. London: Prentice-Hall International.

Harvard

Olson W. C., Lee J. R. and Olson W. C. (1994). The theory and practice of international relations. London: Prentice-Hall International.

MLA

Olson William C, Lee James R and Olson William C. The theory and practice of international relations. London: Prentice-Hall International. 1994.