Potter's new cyclopaedia of medicinal herbs and preparations /
by R. C. Wren. Re-edited and enl. by R. W. Wren. Foreword by T. E. Wallis.
APA Citation
Wren, R. C. (Richard Cranfield)., Wren, R. W. (Richard W.). (1972). Potter's new cyclopaedia of medicinal herbs and preparations. New York: Harper & Row.
MLA Citation
Wren, R. C. (Richard Cranfield), 1864-1931, and R. W. (Richard W.) Wren. Potter's New Cyclopaedia of Medicinal Herbs And Preparations. New York: Harper & Row, 1972.
Warning: These citations may not always be complete (especially for serials).