Subject index of the modern works added to the library of the British Museum.
APA Citation
British Museum. Dept. of Printed Books. Subject index of the modern works added to the library of the British Museum. London: British Museum, Printed by order of the Trustees [etc.].
MLA Citation
British Museum. Dept. of Printed Books. Subject Index of the Modern Works Added to the Library of the British Museum. London: British Museum, Printed by order of the Trustees [etc.],
Warning: These citations may not always be complete (especially for serials).