APA (7th ed.) Citation
Grego, P. (2008). Venus and Mercury, and how to observe them. Springer.
Chicago Style (17th ed.) Citation
Grego, Peter. Venus and Mercury, and How to Observe Them. New York: Springer, 2008.
MLA (9th ed.) Citation
Grego, Peter. Venus and Mercury, and How to Observe Them. Springer, 2008.
Warning: These citations may not always be 100% accurate.