Perennial garden plants, or, The modern florilegium :
a concise account of herbaceous plants, including bulbs, for general garden use /
written and illustrated by Graham Stuart Thomas.

APA Citation

Thomas, G. Stuart. (1990). Perennial garden plants, or, The modern florilegium: a concise account of herbaceous plants, including bulbs, for general garden use. 3rd ed., rev. Portland, Or.: Sagapress, Inc. in association with Timber Press.

MLA Citation

Thomas, Graham Stuart. Perennial Garden Plants, Or, The Modern Florilegium: a Concise Account of Herbaceous Plants, Including Bulbs, for General Garden Use. 3rd ed., rev. Portland, Or.: Sagapress, Inc. in association with Timber Press, 1990.