APA (7th ed.) Citation

(1929). Miscellaneous: Authorized abbreviations. GPO.

Chicago Style (17th ed.) Citation

Miscellaneous: Authorized Abbreviations. [Washington]: GPO, 1929.

MLA (9th ed.) Citation

Miscellaneous: Authorized Abbreviations. GPO, 1929.

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