APA-referens (7:e uppl.)

Bold, H. C. (1968). The plant kingdom (2nd ed.). Prentice-Hall.

Chicago-referens (17:e uppl.)

Bold, Harold C. The Plant Kingdom. 2nd ed. New Delhi: Prentice-Hall, 1968.

MLA-referens (9:e uppl.)

Bold, Harold C. The Plant Kingdom. 2nd ed. Prentice-Hall, 1968.