Gaya APA

UTAMI, E, D. (2011). The duties of guest relation officer in handling vip guest in novotel hotel Solo . : Universitas Sebelas Maret.

Gaya MLA

UTAMI, Ester, Dian. "The duties of guest relation officer in handling vip guest in novotel hotel Solo". : Universitas Sebelas Maret, 2011. TA.