APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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