Widjaja, G. (2008). Sertifikat penitipan efek Indonesia (Indonesian Depository receipt). RajaGrafindo Persada.
Chicago Style (17th ed.) CitationWidjaja, Gunawan. Sertifikat Penitipan Efek Indonesia (Indonesian Depository Receipt). RajaGrafindo Persada, 2008.
MLA (8th ed.) CitationWidjaja, Gunawan. Sertifikat Penitipan Efek Indonesia (Indonesian Depository Receipt). RajaGrafindo Persada, 2008.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.