Gaya APA
Orbani, L. (2017).
Housekeeping Passport, Manajemen Operasional Housekeeping Dasar (1).
Yogyakarta:
Andi Offset.
Gaya MLA
Orbani, Ludfi.
"Housekeeping Passport, Manajemen Operasional Housekeeping Dasar".
1
Yogyakarta:
Andi Offset,
2017.
Buku.