Gaya APA

Blyth, F, G, H., Freitas, M, H, D. (1943). A Geology For Engineers Sixth Edition (1). London: Edward Arnold.

Gaya MLA

Blyth, F., G., H.., Freitas, M., H., De. "A Geology For Engineers Sixth Edition". 1 London: Edward Arnold, 1943. Text.