APA Style

Michelli, J, A., Widjaja, , P, M. (2009). The New Gold Standard, Layanan Bintang Lima The Ritz-Carlton Hotel Company (Cet 1). Jakarta: PT Gramedia Pustaka Utama.

MLA Style

Michelli, Joseph, A.., Widjaja, , Penerjemah,, Martha. "The New Gold Standard, Layanan Bintang Lima The Ritz-Carlton Hotel Company". Cet 1 Jakarta: PT Gramedia Pustaka Utama, 2009. Monograf.