Gaya APA

Ratri, R. (2011). The importance of knowledge and skills in food and beverage serving to increase the quality of applying the standard operating procedures for waiter and waitress at university UMM Inn Hotel (CD) . Malang, Jatim: UNMER.

Gaya MLA

Ratri, Rukmi. "The importance of knowledge and skills in food and beverage serving to increase the quality of applying the standard operating procedures for waiter and waitress at university UMM Inn Hotel (CD)". Malang, Jatim: UNMER, 2011. CD-ROM.