Aitken, W. (1921). Automatic telephone systems. London: Ernsy Benn limited.
Chicago Style CitationAitken, William. Automatic Telephone Systems. London: Ernsy Benn limited, 1921.
MLA CitationAitken, William. Automatic Telephone Systems. London: Ernsy Benn limited, 1921.
Warning: These citations may not always be 100% accurate.