Davis, K. C., Balch, W. B., Colby, A. S., Talbert, T. J., & Gregory, R. W. (1939). Horticulture enterprises. J.B. Lippincott Co.
Lua i Stíl Chicago (17ú heag.)Davis, Kary Cadmus, Walter Buswell Balch, A. S. Colby, Thomas Jesse Talbert, agus R. W. Gregory. Horticulture Enterprises. Philadelphia, Chicago [etc.]: J.B. Lippincott Co, 1939.
Lua MLA (8ú heag.)Davis, Kary Cadmus, et al. Horticulture Enterprises. J.B. Lippincott Co, 1939.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.