Cronquist, A. (1971). Introductory botany (2d ed.). Harper & Row.
Cita Chicago (17th ed.)Cronquist, Arthur. Introductory Botany. 2d ed. New York: Harper & Row, 1971.
Cita MLA (9th ed.)Cronquist, Arthur. Introductory Botany. 2d ed. Harper & Row, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.