Gaya APA
Sugiyono, .
(2022).
Metode penelitian & pengembangan (research and development/R&D)
(
Cet. 5.)
.
Bandung:
Alfabeta.
Gaya MLA
Sugiyono, .
"Metode penelitian & pengembangan (research and development/R&D)".
Cet. 5.
Bandung:
Alfabeta,
2022.
Text.