Hancock, O. (1987). Reading skills for college students. Prentice-Hall.
Chicago Style (17th ed.) ZitazioaHancock, Ophelia. Reading Skills for College Students. New Jersey: Prentice-Hall, 1987.
MLA (9th ed.) ZitazioaHancock, Ophelia. Reading Skills for College Students. Prentice-Hall, 1987.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.