Cita APA (7a ed.)

Wales, A. P., Koesche, G., & Korer, J. (1970). World directory of booksellers: An international guide to booksellers. Alexander P. Wales.

Cita Chicago Style (17a ed.)

Wales, Alexander Peter, Gisella Koesche, y Jacqueline Korer. World Directory of Booksellers: An International Guide to Booksellers. London: Alexander P. Wales, 1970.

Cita MLA (9a ed.)

Wales, Alexander Peter, et al. World Directory of Booksellers: An International Guide to Booksellers. Alexander P. Wales, 1970.