Allaby, M. (2013). A Dictionary of geology and earth sciences (Fourth edition.). Oxford University Press.
Chicago-viite (17. p.)Allaby, Michael. A Dictionary of Geology and Earth Sciences. Fourth edition. Oxford: Oxford University Press, 2013.
MLA-viite (9. p.)Allaby, Michael. A Dictionary of Geology and Earth Sciences. Fourth edition. Oxford University Press, 2013.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.