MLA

of Lands, Western Australia. Department, and Surveys. [Ravensthorpe]. The Department, 1921. https://collections.library.yale.edu/catalog/15824514.

APA, 6th edition

of Lands, W. A. D., & S. (1921). [Ravensthorpe]. [Maps]. The Department, https://collections.library.yale.edu/catalog/15824514.