APA-čujuhus (7. p.)

SIMPSON, G. G. (1964). Life of the past: An introductionto paleontology. YaleUniversity.

Chicago-čujuhus (17. p.)

SIMPSON, George Gaylord. Life of the Past: An Introductionto Paleontology. London: YaleUniversity, 1964.

MLA-čujuhus (9. p.)

SIMPSON, George Gaylord. Life of the Past: An Introductionto Paleontology. YaleUniversity, 1964.

Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.