APA-referens (7:e uppl.)

Stephen, J., & Wilberforce, W. (1816). A defence of the bill for the registration of slaves, in letters to William Wilberforce, Esq. M.P. Printed for J. Butterworth and Son, and J. Hatchard.

Chicago-referens (17:e uppl.)

Stephen, James, och William Wilberforce. A Defence of the Bill for the Registration of Slaves, in Letters to William Wilberforce, Esq. M.P. London: Printed for J. Butterworth and Son, and J. Hatchard, 1816.

MLA-referens (8:e uppl.)

Stephen, James, och William Wilberforce. A Defence of the Bill for the Registration of Slaves, in Letters to William Wilberforce, Esq. M.P. Printed for J. Butterworth and Son, and J. Hatchard, 1816.