APA (7th ed.) Citation
(1960). Publishers' international Year Book: World directory of book publishers. Wales.
Chicago Style (17th ed.) Citation
Publishers' International Year Book: World Directory of Book Publishers. London: Wales, 1960.
MLA (9th ed.) Citation
Publishers' International Year Book: World Directory of Book Publishers. Wales, 1960.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.