APA-čujuhus (7. p.)
Grego, P. (2008). Venus and Mercury, and how to observe them. Springer.
Chicago-čujuhus (17. p.)
Grego, Peter. Venus and Mercury, and How to Observe Them. New York: Springer, 2008.
MLA-čujuhus (9. p.)
Grego, Peter. Venus and Mercury, and How to Observe Them. Springer, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.