Greulach, V. A. (1968). Botany made simple. Doubleday.
Chicago Style aipamenaGreulach, Victor A. Botany Made Simple. Garden City, New York: Doubleday, 1968.
MLA aipamenaGreulach, Victor A. Botany Made Simple. Doubleday, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.