APA (7th ed.) Citation

Wasem, R. E. (1994). Immigration's contribution to the size of the U.S. population. Congressional Research Service, Library of Congress.

Chicago Style (17th ed.) Citation

Wasem, Ruth Ellen. Immigration's Contribution to the Size of the U.S. Population. [Washington, D.C.]: Congressional Research Service, Library of Congress, 1994.

MLA (9th ed.) Citation

Wasem, Ruth Ellen. Immigration's Contribution to the Size of the U.S. Population. Congressional Research Service, Library of Congress, 1994.