APA-Zitierstil (7. Ausg.)

Silver, H. W. (2012). ARRL's extra Q & A: All you need to pass your extra class exam!; [pass the 50-question test ; includes the latest question pool with answer key, for use July 1, 2012 to June 30, 2016 ; brief, clear explanations for all questions] (3. ed.). ARRL.

Chicago-Zitierstil (17. Ausg.)

Silver, H. Ward. ARRL's Extra Q & A: All You Need to Pass Your Extra Class Exam!; [pass the 50-question Test ; Includes the Latest Question Pool with Answer Key, for Use July 1, 2012 to June 30, 2016 ; Brief, Clear Explanations for All Questions]. 3. ed. Newington, Conn: ARRL, 2012.

MLA-Zitierstil (9. Ausg.)

Silver, H. Ward. ARRL's Extra Q & A: All You Need to Pass Your Extra Class Exam!; [pass the 50-question Test ; Includes the Latest Question Pool with Answer Key, for Use July 1, 2012 to June 30, 2016 ; Brief, Clear Explanations for All Questions]. 3. ed. ARRL, 2012.