APA (7th ed.) Citation

Armstrong, J. E. (1960). Surficial geology of Sumas map-area, British Columbia.

Chicago Style (17th ed.) Citation

Armstrong, J. E. Surficial Geology of Sumas Map-area, British Columbia. 1960.

MLA (9th ed.) Citation

Armstrong, J. E. Surficial Geology of Sumas Map-area, British Columbia. 1960.

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