Cita APA (7a ed.)

Jones, D. A., & Wilkins, D. A. (1971). Variation and adaptation in plant species. Heinemann educational books.

Cita Chicago Style (17a ed.)

Jones, David A., y Dennis A. Wilkins. Variation and Adaptation in Plant Species. London: Heinemann educational books, 1971.

Cita MLA (8a ed.)

Jones, David A., y Dennis A. Wilkins. Variation and Adaptation in Plant Species. Heinemann educational books, 1971.