APA (7e ed.) Bronvermelding

Bold, H. C. (1964). The plant kingdom (2nd ed.). Prentice-Hall.

Chicago (17e ed.) Bronvermelding

Bold, Harold Charles. The Plant Kingdom. 2nd ed. Englewood: Prentice-Hall, 1964.

MLA (9e ed.) Bronvermelding

Bold, Harold Charles. The Plant Kingdom. 2nd ed. Prentice-Hall, 1964.