APA

Jones J. K., Manning R. W., .New subspecies of the rock squirrel, Spermophilus variegatus, from isla Tiburon, Sonora, Mexico. : .

Chicago

Jones J Knox, Manning Richard W, .New subspecies of the rock squirrel, Spermophilus variegatus, from isla Tiburon, Sonora, Mexico. : .

Harvard

Jones J. K., Manning R. W., .New subspecies of the rock squirrel, Spermophilus variegatus, from isla Tiburon, Sonora, Mexico. : .

MLA

Jones J Knox, Manning Richard W, .: . .