Gaya APA
If Only (e-book). (2018).
Solo:
Kepustakaan Populer Gramedia.
Gaya Chicago
If Only (e-book).
.
Solo:
Kepustakaan Populer Gramedia,
2018.
NONFIKSI.
Gaya MLA
If Only (e-book).
.
Solo:
Kepustakaan Populer Gramedia,
2018.
NONFIKSI.
Gaya Turabian
If Only (e-book).
Solo:
Kepustakaan Populer Gramedia,
2018.
NONFIKSI.