APA (7th ed.) Zitazioa
Shannon, T. A. (1985). What are they saying about genetic engineering? Paulist Press.
Chicago Style (17th ed.) Zitazioa
Shannon, Thomas A. What Are They Saying About Genetic Engineering? New York: Paulist Press, 1985.
MLA (9th ed.) Zitazioa
Shannon, Thomas A. What Are They Saying About Genetic Engineering? Paulist Press, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.