Friedman, M. (1960). The covenant of peace: A personal witness / by Maurice Friedman. Pendle Hill.
Lua i Stíl Chicago (17ú heag.)Friedman, Maurice. The Covenant of Peace: A Personal Witness / by Maurice Friedman. Wallingford: Pendle Hill, 1960.
Lua MLA (8ú heag.)Friedman, Maurice. The Covenant of Peace: A Personal Witness / by Maurice Friedman. Pendle Hill, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.