APA (7th ed.) Citation

Benedikt, R., & Knecht, E. (1889). The chemistry of the coal-tar colours (2d ed.). G. Bell.

Chicago Style (17th ed.) Citation

Benedikt, Rudolf, and Edmund Knecht. The Chemistry of the Coal-tar Colours. 2d ed. London: G. Bell, 1889.

MLA (8th ed.) Citation

Benedikt, Rudolf, and Edmund Knecht. The Chemistry of the Coal-tar Colours. 2d ed. G. Bell, 1889.