Gaya APA
Jeffries, S. (2025).
Historical Romance: Proyek Sang Duchess (Project Duchess) .
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
Jeffries, Sabrina.
"Historical Romance: Proyek Sang Duchess (Project Duchess)".
Jakarta:
Gramedia Pustaka Utama,
2025.
Text.