Tarr , R. S., & Martin , L. (1924). College physiography. Macmillan.
Chicago-čujuhus (17. p.)Tarr , Ralph Stockman, juo Lawrence Martin. College Physiography. New York: Macmillan, 1924.
MLA-čujuhus (9. p.)Tarr , Ralph Stockman, juo Lawrence Martin. College Physiography. Macmillan, 1924.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.