Παραπομπή σε μορφή APA (7η εκδ.)

Roberts, A. F. (1947). Geological structures and maps: A practical course in the interpretation of geological maps for civil and mining engineers. I. Pitman.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Roberts, A. F. Geological Structures and Maps: A Practical Course in the Interpretation of Geological Maps for Civil and Mining Engineers. London: I. Pitman, 1947.

Παραπομπή σε μορφή MLA (8th εκδ.)

Roberts, A. F. Geological Structures and Maps: A Practical Course in the Interpretation of Geological Maps for Civil and Mining Engineers. I. Pitman, 1947.