Cita APA (7a ed.)

British Museum & Proctor, R. G. C. (1954). An index of German books 1501-1520 in the British Museum (2nd ed.). Holland Press.

Cita Chicago Style (17a ed.)

British Museum y Robert George Collier Proctor. An Index of German Books 1501-1520 in the British Museum. 2nd ed. London: Holland Press, 1954.

Cita MLA (9a ed.)

British Museum y Robert George Collier Proctor. An Index of German Books 1501-1520 in the British Museum. 2nd ed. Holland Press, 1954.