APA-viite (7. p.)
McGonagle, J. J., & Vella, C. M. (2012). Proactive Intelligence: The Successful Executive's Guide to Intelligence. Springer London. https://doi.org/10.1007/978-1-4471-2742-0
Chicago-viite (17. p.)
McGonagle, John J., ja Carolyn M. Vella. Proactive Intelligence: The Successful Executive's Guide to Intelligence. London: Springer London, 2012. https://doi.org/10.1007/978-1-4471-2742-0.
MLA-viite (9. p.)
McGonagle, John J., ja Carolyn M. Vella. Proactive Intelligence: The Successful Executive's Guide to Intelligence. Springer London, 2012. https://doi.org/10.1007/978-1-4471-2742-0.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.