Gaya APA
dumont, T, Q., qadria, L. (2017).
the power of concentration
rahasia terbesar kekuatan konsentrasi (1).
jakarta:
bright publisher.
Gaya MLA
dumont, Theron, Q., qadria, Laila.
"the power of concentration
rahasia terbesar kekuatan konsentrasi".
1
jakarta:
bright publisher,
2017.
Text.