APA (7th ed.) Citation

Duff, E., Duff, H. A., & Lloyd, E. (1868). The Powder magazine. Printed for private circulation by Taylor and Co..

Chicago Style (17th ed.) Citation

Duff, Eleanor, Henriette Anne Duff, and Eleanor Lloyd. The Powder Magazine. London: Printed for private circulation by Taylor and Co., 1868.

MLA (8th ed.) Citation

Duff, Eleanor, et al. The Powder Magazine. Printed for private circulation by Taylor and Co., 1868.