Bell , F. G. (2007). Engineering geology (2nd ed.). Butterworth Heinemann.
Tohutoru Kātū Chicago (17th ed.)Bell , F. G. Engineering Geology. 2nd ed. Oxford: Butterworth Heinemann, 2007.
Tohutoro MLA (9th ed.)Bell , F. G. Engineering Geology. 2nd ed. Butterworth Heinemann, 2007.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.