United States. Congress. House. Committee of Conference & ProQuest (Firm). (1906). Construction and maintenance of wharves, piers, etc., in Porto Rico. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Congress. House. Committee of Conference and ProQuest (Firm). Construction and Maintenance of Wharves, Piers, Etc., in Porto Rico. Washington: [publisher not identified], 1906.
MLA (9th ed.) CitationUnited States. Congress. House. Committee of Conference and ProQuest (Firm). Construction and Maintenance of Wharves, Piers, Etc., in Porto Rico. [publisher not identified], 1906.
Warning: These citations may not always be 100% accurate.