Collins, R. (1967). Egypt and the Sudan. Prentice-Hall.
Chicago Style (17th ed.) ZitazioaCollins, Robert. Egypt and the Sudan. Englewood Cliffs: Prentice-Hall, 1967.
MLA (9th ed.) ZitazioaCollins, Robert. Egypt and the Sudan. Prentice-Hall, 1967.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.