APA (7th ed.) Citation

Douglas, R. J. W. (1981). Callum Creek, Langford Creek, and Gap map-areas, Alberta (Ottowa 1950. Repr.).

Chicago Style (17th ed.) Citation

Douglas, Robert J. W. Callum Creek, Langford Creek, and Gap Map-areas, Alberta. Ottowa 1950. Repr. Ottawa, 1981.

MLA (9th ed.) Citation

Douglas, Robert J. W. Callum Creek, Langford Creek, and Gap Map-areas, Alberta. Ottowa 1950. Repr. 1981.

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