Gaya APA
Riswanto, ., Suseno, N. (2015).
Dasar-Dasar Astronomi dan Fisika Kebumian (ebook) .
Metro:
UM Metro Press.
Gaya MLA
Riswanto, ., Suseno, Nyoto.
"Dasar-Dasar Astronomi dan Fisika Kebumian (ebook)".
Metro:
UM Metro Press,
2015.
Electronic Book.