APA Style

Zentner, Jeff. (2018). Goodbye days (Cetakan 1). Ponorogo: Spring.

Chicago Style

Zentner, Jeff. Goodbye days. Cetakan 1 Ponorogo: Spring, 2018. Buku SMP Athalia.

MLA Style

Zentner, Jeff. Goodbye days. Cetakan 1 Ponorogo: Spring, 2018. Buku SMP Athalia.

Turabian Style

Zentner, Jeff. Goodbye days. Cetakan 1 Ponorogo: Spring, 2018. Buku SMP Athalia.