APA

Hatch F. H., Wells A. K. & Wells M. K. (1956). The petrology of the igneous rocks. London: T.Murby.

Chicago

Hatch F H, Wells A K and Wells M K. 1956. The petrology of the igneous rocks. London: T.Murby.

Harvard

Hatch F. H., Wells A. K. and Wells M. K. (1956). The petrology of the igneous rocks. London: T.Murby.

MLA

Hatch F H, Wells A K and Wells M K. The petrology of the igneous rocks. London: T.Murby. 1956.