Cita APA (7th ed.)

Wright, J. D., Potts, J., & Humphries, C. (2004). Philip's guide to the state of the world. Philip's.

Cita Chicago (17th ed.)

Wright, John D., Joanna Potts, i Christian Humphries. Philip's Guide to the State of the World. London: Philip's, 2004.

Cita MLA (9th ed.)

Wright, John D., et al. Philip's Guide to the State of the World. Philip's, 2004.