Gaya APA

Building optimism in the middle of challenges= membangun optimisme di tengah tantangan. (2015). [s.l.]: Kementerian Keuangan R.I..

Gaya MLA

Building optimism in the middle of challenges= membangun optimisme di tengah tantangan. . [s.l.]: Kementerian Keuangan R.I., 2015. Buku.