The book world,
by Basil Blackwell, Gerald Gould, G. Wren Howard [and others] ... Edited by John Hampden.

APA Citation

Hampden, J. (1935). The book world. London: T. Nelson & sons ltd.

MLA Citation

Hampden, John, 1898- ed. The Book World. London: T. Nelson & sons ltd, 1935.

Warning: These citations may not always be complete (especially for serials).