APA (7th ed.) Citation

(1973). Classification - class A: General works. Washington, D C : Library of Congress.

Chicago Style (17th ed.) Citation

Classification - Class A: General Works. Washington, D C : Library of Congress, 1973.

MLA (9th ed.) Citation

Classification - Class A: General Works. Washington, D C : Library of Congress, 1973.

Warning: These citations may not always be 100% accurate.