Cita APA (7th ed.)

Gibson, C. G. (2003). Elementary Euclidean geometry: An introduction. Cambridge University Press.

Cita Chicago (17th ed.)

Gibson, Christopher G. Elementary Euclidean Geometry: An Introduction. Cambridge, UK: Cambridge University Press, 2003.

Cita MLA (9th ed.)

Gibson, Christopher G. Elementary Euclidean Geometry: An Introduction. Cambridge University Press, 2003.