Cita APA (7a ed.)

British Museum & Thomas, H. (1921). Short-title catalogue of books printed in Spain and of Spanish books printed elsewhere in Europe before 1601 now in the British Museum. Printed by order of the Trustees [etc.].

Cita Chicago Style (17a ed.)

British Museum y Henry Thomas. Short-title Catalogue of Books Printed in Spain and of Spanish Books Printed Elsewhere in Europe Before 1601 Now in the British Museum. London: Printed by order of the Trustees [etc.], 1921.

Cita MLA (9a ed.)

British Museum y Henry Thomas. Short-title Catalogue of Books Printed in Spain and of Spanish Books Printed Elsewhere in Europe Before 1601 Now in the British Museum. Printed by order of the Trustees [etc.], 1921.