Library of Congress. Legislative Reference Service & ProQuest (Firm). (1967). World Population from Beginning of the Christian Era to Date: Selected Information. [publisher not identified].
Chicago Style (17th ed.) CitationLibrary of Congress. Legislative Reference Service and ProQuest (Firm). World Population from Beginning of the Christian Era to Date: Selected Information. [Place of publication not identified]: [publisher not identified], 1967.
MLA (9th ed.) CitationLibrary of Congress. Legislative Reference Service and ProQuest (Firm). World Population from Beginning of the Christian Era to Date: Selected Information. [publisher not identified], 1967.
Warning: These citations may not always be 100% accurate.