Gaya APA
Sugiyono, .
(2016).
Metode Penelitian & Pengembangan Research and Development
(
cet.i)
.
Bandung:
Alfabeta.
Gaya MLA
Sugiyono, .
"Metode Penelitian & Pengembangan Research and Development".
cet.i
Bandung:
Alfabeta,
2016.
Textbook.