APA-referens (7:e uppl.)

Roldan, A. S., & Ilano, E. (2008). Introduction to hotel and front office operations. AR Skills Development & Management Services.

Chicago-referens (17:e uppl.)

Roldan, Amelia S., och Erlinda Ilano. Introduction to Hotel and Front Office Operations. Paranaque: AR Skills Development & Management Services, 2008.

MLA-referens (9:e uppl.)

Roldan, Amelia S., och Erlinda Ilano. Introduction to Hotel and Front Office Operations. AR Skills Development & Management Services, 2008.