Gaya APA
Airlangga, T. (2012).
Pengaruh self efficacy terhadap keterampilan public speaking trainer di Lembaga ESQ Leadership Center .
Jakarta:
.
Gaya MLA
Airlangga, Trian.
"Pengaruh self efficacy terhadap keterampilan public speaking trainer di Lembaga ESQ Leadership Center".
Jakarta:
,
2012.
Text.