APA-viite

Kahn, H., & Wiener, A. J. (1968). Year 2000: Framework for speculation on the next thirty-three years.

Chicago-tyylinen lähdeviittaus

Kahn, Herman, ja Anthony J. Wiener. Year 2000: Framework for Speculation on the Next Thirty-three Years. 1968.

MLA-viite

Kahn, Herman, ja Anthony J. Wiener. Year 2000: Framework for Speculation on the Next Thirty-three Years. 1968.