Gillen,Terry. (1997). Positive influencing skills. Jaico.
Čikaški stil citiranjaGillen,Terry. Positive Influencing Skills. Bombay: Jaico, 1997.
MLA način citiranjaGillen,Terry. Positive Influencing Skills. Jaico, 1997.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.