1. Jones, A., 1965. Cytogenetical observations and fertility measurements of sweet potato (Ipomoea batatas (L.) Lam.) Proc. Amer. Soc. hort. Sci. 86: 527–537.
2. Jones, A. & M. T. Deonier, 1965. Interspecific crosses among Ipomoea lacunosa, I. romoni, I. trichocarpa, and I. triloba. Bot. Gaz. 126: 226–232.
3. Jones, A., 1967. Should Nishiyama's K 123 (Ipomoea trifida) be designated I. batatas? Econ. Bot. 21: 163–166.
4. Jones, A. & M. Kobayashi, 1968. Derived polyploids of section Batatas genus Ipomoea. Proc. Amer. Soc. hort. Sci. 93: 497–501.
5. Kihara, H. & I. Nishiyama, 1932. Different compatibility in reciprocal crosses of Avena, with special reference to tetraploid hybrids between hexaploid and diploid species. Japan. J. Bot. 6: 245–305.