JOLLEY,E.H. (1989). INTRO TO TELEPHONY & TELEGRAPHY. WHEELER & CO.
Lua i Stíl Chicago (17ú heag.)JOLLEY,E.H. INTRO TO TELEPHONY & TELEGRAPHY. ALLAHABAD: WHEELER & CO, 1989.
Lua MLA (9ú heag.)JOLLEY,E.H. INTRO TO TELEPHONY & TELEGRAPHY. WHEELER & CO, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.