Gaya APA
Manurung, Heldin, Tarmoezi, Trizno. (1999).
Professional hotel frontliner .
Jakarta:
Kesaint Blanc.
Gaya Chicago
Manurung, Heldin, Tarmoezi, Trizno.
Professional hotel frontliner.
Jakarta:
Kesaint Blanc,
1999.
Text.
Gaya MLA
Manurung, Heldin, Tarmoezi, Trizno.
Professional hotel frontliner.
Jakarta:
Kesaint Blanc,
1999.
Text.
Gaya Turabian
Manurung, Heldin, Tarmoezi, Trizno.
Professional hotel frontliner.
Jakarta:
Kesaint Blanc,
1999.
Print.