Vant, H. J. H., & Springer, G. F. (1967). Imagination in science. Springer-Verlag.
Chicago Style aipamenaVant, Hoff J H., and G F. Springer. Imagination in Science. New York: Springer-Verlag, 1967.
MLA aipamenaVant, Hoff J H., and G F. Springer. Imagination in Science. Springer-Verlag, 1967.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.