APA (7th ed.) Citation

Blyth, F. G. H., & De Freitas, M. H. A geology for engineers (Seventh edition.).

Chicago Style (17th ed.) Citation

Blyth, F. G. H., and M. H. De Freitas. A Geology for Engineers. Seventh edition.

MLA (9th ed.) Citation

Blyth, F. G. H., and M. H. De Freitas. A Geology for Engineers. Seventh edition.

Warning: These citations may not always be 100% accurate.