Ashkenas Ron & Manville, B. (2019). Leader's Handbook. HBSP.
Lua i Stíl Chicago (17ú heag.)Ashkenas Ron agus Brook Manville. Leader's Handbook. Boston, U.S: HBSP, 2019.
Lua MLA (9ú heag.)Ashkenas Ron agus Brook Manville. Leader's Handbook. HBSP, 2019.
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