Cita APA (7th ed.)

Arthur, A., Einsiedel, A., King, D., & Keates, C. (1989). Shell. Dorling Kindersley.

Cita Chicago (17th ed.)

Arthur, Alex, Andreas Einsiedel, Dave King, i Colin Keates. Shell. London: Dorling Kindersley, 1989.

Cita MLA (9th ed.)

Arthur, Alex, et al. Shell. Dorling Kindersley, 1989.