Cita APA (7a ed.)

Hardy, A. S. (1881). Elements of quaternions. Gin&Company.

Cita Chicago Style (17a ed.)

Hardy, Arthur Sherburne. Elements of Quaternions. Boston: Gin&Company, 1881.

Cita MLA (9a ed.)

Hardy, Arthur Sherburne. Elements of Quaternions. Gin&Company, 1881.