APA
Marshall A. W. [. o. c., . (1939). Micrometers, slide gauges and calipers, principles, construction, operation and use of appliances for fine mechanical measurements. London: P. Marshall & co., ltd.
Chicago
Marshall Alfred William [from old catalog], . 1939. Micrometers, slide gauges and calipers, principles, construction, operation and use of appliances for fine mechanical measurements. London: P. Marshall & co., ltd.
Harvard
Marshall A. W. [. o. c., . (1939). Micrometers, slide gauges and calipers, principles, construction, operation and use of appliances for fine mechanical measurements. London: P. Marshall & co., ltd.
MLA
Marshall Alfred William [from old catalog], . Micrometers, slide gauges and calipers, principles, construction, operation and use of appliances for fine mechanical measurements. London: P. Marshall & co., ltd. 1939.