Bold, H. C. (1968). The plant kingdom (2nd ed.). Prentice-Hall.
Chicago Style aipamenaBold, Harold C. The Plant Kingdom. 2nd ed. New Delhi: Prentice-Hall, 1968.
MLA aipamenaBold, Harold C. The Plant Kingdom. 2nd ed. Prentice-Hall, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.