APA način citiranja

George, M. F., & Burke, M. J. (1977). Cold Hardiness and Deep Supercooling in Xylem of Shagbark Hickory.

Čikaški stil citiranja

George, Milon F., i Michael J. Burke. Cold Hardiness and Deep Supercooling in Xylem of Shagbark Hickory. 1977.

MLA način citiranja

George, Milon F., i Michael J. Burke. Cold Hardiness and Deep Supercooling in Xylem of Shagbark Hickory. 1977.