Free, M., & Dietz, M. J. (1957). Plant propagation in pictures: How to increase the number of plants in your home and garden by division, grafting, layering, cuttings, bulbs and tubers, sowing seeds and spores. American Garden Guild.
Chicago Style (17th ed.) CitationFree, Montague, and Marjorie J. Dietz. Plant Propagation in Pictures: How to Increase the Number of Plants in Your Home and Garden by Division, Grafting, Layering, Cuttings, Bulbs and Tubers, Sowing Seeds and Spores. Garden City, N.Y.: American Garden Guild, 1957.
MLA (9th ed.) CitationFree, Montague, and Marjorie J. Dietz. Plant Propagation in Pictures: How to Increase the Number of Plants in Your Home and Garden by Division, Grafting, Layering, Cuttings, Bulbs and Tubers, Sowing Seeds and Spores. American Garden Guild, 1957.