Gaya APA
Sugiyono, .
(2015).
Metode Penelitian & Pengembangan: Research and Development
(
1)
.
Solo:
Alfabeta 3.
Gaya MLA
Sugiyono, .
"Metode Penelitian & Pengembangan: Research and Development".
1
Solo:
Alfabeta 3,
2015.
Buku Teks.