YIP, G. S. (2012). Total global strategy third edition. Pearson.
Lua i Stíl Chicago (17ú heag.)YIP, George S. Total Global Strategy Third Edition. Pearson, 2012.
Lua MLA (8ú heag.)YIP, George S. Total Global Strategy Third Edition. Pearson, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.