Salisbury, F. B., & Parke, R. V. (1970). Vascular plants: Form and function (2nd ed.). Macmillan Press.

Salisbury, Frank B., and Robert V. Parke. Vascular Plants: Form and Function. 2nd ed. London: Macmillan Press, 1970.

Salisbury, Frank B., and Robert V. Parke. Vascular Plants: Form and Function. 2nd ed. Macmillan Press, 1970.