COUCH LEON W. (2009). DIGITAL AND ANALOG COMMUNICATION SYSTEMS 7TH ED (7TH ED.). PEARSON EDUCATION.
Lua i Stíl Chicago (17ú heag.)COUCH LEON W. DIGITAL AND ANALOG COMMUNICATION SYSTEMS 7TH ED. 7TH ED. INDIA: PEARSON EDUCATION, 2009.
Lua MLA (9ú heag.)COUCH LEON W. DIGITAL AND ANALOG COMMUNICATION SYSTEMS 7TH ED. 7TH ED. PEARSON EDUCATION, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.