APA (7th ed.) Citation

National Book League (Great Britain). (1968). Reader's guide to Scotland: A bibliography. National Book League.

Chicago Style (17th ed.) Citation

National Book League (Great Britain). Reader's Guide to Scotland: A Bibliography. London: National Book League, 1968.

MLA (9th ed.) Citation

National Book League (Great Britain). Reader's Guide to Scotland: A Bibliography. National Book League, 1968.