Citazione Stile APA (7a Edizione)

Krueger, K. (2010). "U-X-L Encyclopedia of U. S. History" Hones Students' Subject Search and Indexing Skills.

Citazione stile Chigago Style (17a edizione)

Krueger, Karla. "U-X-L Encyclopedia of U. S. History" Hones Students' Subject Search and Indexing Skills. 2010.

Citatione MLA (9a ed.)

Krueger, Karla. "U-X-L Encyclopedia of U. S. History" Hones Students' Subject Search and Indexing Skills. 2010.