Johnson, G. B. (1994). Human biology: Explaining concepts. Wm. C. Brown.
Chicago-čujuhus (17. p.)Johnson, George B. Human Biology: Explaining Concepts. Dubuque, Iowa: Wm. C. Brown, 1994.
MLA-čujuhus (9. p.)Johnson, George B. Human Biology: Explaining Concepts. Wm. C. Brown, 1994.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.