Description of Richards' improved steam-engine indicator with directions for its use

MLA

Porter, Charles T. Description of Richards' Improved Steam-engine Indicator with Directions for Its Use. London: Longmans, 1868.

APA

Porter, C. T. (1868). Description of Richards' improved steam-engine indicator with directions for its use. London: Longmans.

Chicago

Porter, Charles T. Description of Richards' Improved Steam-Engine Indicator with Directions for Its Use. London: Longmans, 1868.