Frothingham, J. P. (1913). Success in gardening: Work in the flower garden week by week. Duffield & Co..
Chicago-referens (17:e uppl.)Frothingham, Jessie Peabody. Success in Gardening: Work in the Flower Garden Week by Week. New York: Duffield & Co., 1913.
MLA-referens (8:e uppl.)Frothingham, Jessie Peabody. Success in Gardening: Work in the Flower Garden Week by Week. Duffield & Co., 1913.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.