APA (7th ed.) Citation

Wales, A. P. (1968). International library directory: A world directory of libraries (3rd ed.,1969/70.). A.P. Wales Organization.

Chicago Style (17th ed.) Citation

Wales, A. P. International Library Directory: A World Directory of Libraries. 3rd ed.,1969/70. London: A.P. Wales Organization, 1968.

MLA (8th ed.) Citation

Wales, A. P. International Library Directory: A World Directory of Libraries. 3rd ed.,1969/70. A.P. Wales Organization, 1968.