Muller, W. H. (1974). Botany: A functional approach (3rd ed.). Macmillan,].
Cita Chicago (17th ed.)Muller, Walter H. Botany: A Functional Approach. 3rd ed. [New York: Macmillan,], 1974.
Cita MLA (9th ed.)Muller, Walter H. Botany: A Functional Approach. 3rd ed. Macmillan,], 1974.
Atenció: Aquestes cites poden no estar 100% correctes.