APA (7th ed.) Zitazioa
Simmons, S. (1977). Drawing: The creative process. Prentice-Hall.
Chicago Style (17th ed.) Zitazioa
Simmons, Seymour. Drawing: The Creative Process. New Jersey: Prentice-Hall, 1977.
MLA (9th ed.) Zitazioa
Simmons, Seymour. Drawing: The Creative Process. Prentice-Hall, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.