Cita APA (7a ed.)

Tyrrell, G., & Petre, M. D. (1920). George Tyrrell's letters. T.F. Unwin.

Cita Chicago Style (17a ed.)

Tyrrell, George, y Maude Dominica Petre. George Tyrrell's Letters. London: T.F. Unwin, 1920.

Cita MLA (8a ed.)

Tyrrell, George, y Maude Dominica Petre. George Tyrrell's Letters. T.F. Unwin, 1920.