Cooper, E. K. (1978). Science in your own backyard. Harcourt, Brace & World.
Chicago Style aipamenaCooper, Elizabeth K. Science in Your Own Backyard. New York: Harcourt, Brace & World, 1978.
MLA aipamenaCooper, Elizabeth K. Science in Your Own Backyard. Harcourt, Brace & World, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.