(J. B. )& Hawkes, Hawkes, (B. ), Hawkes, (B. ), and Hawkes, (J. B. )&, ?Proc. Linn. Soc. Lond. 166: 130. 1956.?, 1956.

(B. ) Hawkes, ?Rep. (Annual) Scott. Pl. Breed. Sta.1956: 92. 1956.?, 1956.

(B. ) Hawkes, ?Potato Collect. Exped. Mexico & S. Amer., 2, Syst. Classific. Collect. 30. 1944.?, 1944.

(B. ) H. & Hjert. and Hawkes, (B. ), ?Rep. (Annual) Scott. Pl. Breed. Sta. 1956: 61. 1956.?, 1956.

(B. ) Hawkes, ?Revision Tuber-Bearing Solanums, ed. 2.?.