Graham, P. H. F. W. J. . H. R. C. (1940). Analytic geometry. Prentice-Hall.
Cita Chicago (17th ed.)Graham, Palmer H.; F. Wallace John Hollis R. Cooley. Analytic Geometry. New York: Prentice-Hall, 1940.
Cita MLA (9th ed.)Graham, Palmer H.; F. Wallace John Hollis R. Cooley. Analytic Geometry. Prentice-Hall, 1940.
Atenció: Aquestes cites poden no estar 100% correctes.