APA Format
50810. (2013). The secret public speaking : era konseptual. Jakarta : bbc
MLA Format
50810. The secret public speaking : era konseptual. Jakarta : bbc, 2013
Chicago Format
50810. The secret public speaking : era konseptual. Jakarta : bbc, 2013
Australian/Harvard Format
50810. 2013. The secret public speaking : era konseptual. bbc Jakarta