Potter's new cyclopaedia of botanical drugs and preparations /
Re-edited and enl. by R.W. Wren. Foreword by T.E. Wallis.
APA Citation
Wren, R. C. (Richard Cranfield)., Potter & Clarke. (1971). Potter's new cyclopaedia of botanical drugs and preparations. [7th ed.]. Rustington, Eng.: Health Science Press.
MLA Citation
Wren, R. C. (Richard Cranfield), 1864-1931, and Potter & Clarke. Potter's New Cyclopaedia of Botanical Drugs And Preparations. [7th ed.]. Rustington, Eng.: Health Science Press, 1971.
Warning: These citations may not always be complete (especially for serials).