Cita APA (7th ed.)
Foster, R. D. (1983). The navigator. Navpress.
Cita Chicago (17th ed.)
Foster, Robert D. The Navigator. Colorado springs: Navpress, 1983.
Cita MLA (9th ed.)
Foster, Robert D. The Navigator. Navpress, 1983.
Atenció: Aquestes cites poden no estar 100% correctes.