Attributes / relations provided by
♦ 1Sylvilagus audubonii, Joseph A. Chapman and Gale R. Willner, MAMMALIAN SPECIES No. 106, pp. 1-4 (1978)
♦ 2Spermophilus richardsonii, Gail R. Michener and James W. Koeppl, Mammalian Species No. 243, pp. 1-8, (1985)