Gaya APA

Attewell, P., Farmer, I. (1976). Principles Of Engineering Geology Volume 1 (Cet. 1). London: Chapmant And Hall.

Gaya MLA

Attewell, P.B.., Farmer, I.W.. "Principles Of Engineering Geology Volume 1". Cet. 1 London: Chapmant And Hall, 1976. Text.