APA Citation

Bell, D. S. Philadelphia Gas Works Co., Philadelphia, Pa. 1915-1940.

Chicago Style Citation

Bell, D. Sargent. Philadelphia Gas Works Co., Philadelphia, Pa. 1915-1940.

MLA Citation

Bell, D. Sargent. Philadelphia Gas Works Co., Philadelphia, Pa. 1915-1940.

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