SPARKS DONALD B. (1982). DYNAMICS OF EFFECTIVE NEGOTIATION. GULF PUBLISHING CO.
Lua i Stíl Chicago (17ú heag.)SPARKS DONALD B. DYNAMICS OF EFFECTIVE NEGOTIATION. LONDON: GULF PUBLISHING CO, 1982.
Lua MLA (9ú heag.)SPARKS DONALD B. DYNAMICS OF EFFECTIVE NEGOTIATION. GULF PUBLISHING CO, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.