BIOS | Puslitbang Sinergis Asa Professional. Cambridge University Press.
Cita Chicago (17th ed.)BIOS | Puslitbang Sinergis Asa Professional. Cambridge University Press.
Cita MLA (9th ed.)BIOS | Puslitbang Sinergis Asa Professional. Cambridge University Press.
Atenció: Aquestes cites poden no estar 100% correctes.