APA-referens (7:e uppl.)

Roldan, A. S. (2012). Operating and managing a hotel & restaurant business (Revised edition, 2012.). AR Skills Development and Management Services.

Chicago-referens (17:e uppl.)

Roldan, Amelia Samson. Operating and Managing a Hotel & Restaurant Business. Revised edition, 2012. Parañaque City: AR Skills Development and Management Services, 2012.

MLA-referens (9:e uppl.)

Roldan, Amelia Samson. Operating and Managing a Hotel & Restaurant Business. Revised edition, 2012. AR Skills Development and Management Services, 2012.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.