Cita APA (7a ed.)

Knaack, U., & Klein, T. (2008). The future envelope 1: A multidisciplinary approach. IOS Press.

Cita Chicago Style (17a ed.)

Knaack, Ulrich, y Tillmann Klein. The Future Envelope 1: A Multidisciplinary Approach. Amsterdam: IOS Press, 2008.

Cita MLA (8a ed.)

Knaack, Ulrich, y Tillmann Klein. The Future Envelope 1: A Multidisciplinary Approach. IOS Press, 2008.