APA (7th ed.) Citation

United States. Congress. Senate. Committee on Territories and Insular Possessions & ProQuest (Firm). (1921). Customs buildings in Porto Rico. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Congress. Senate. Committee on Territories and Insular Possessions and ProQuest (Firm). Customs Buildings in Porto Rico. Washington: [publisher not identified], 1921.

MLA (9th ed.) Citation

United States. Congress. Senate. Committee on Territories and Insular Possessions and ProQuest (Firm). Customs Buildings in Porto Rico. [publisher not identified], 1921.

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