Gaya APA
BUTAR, A, J, R, B.
(2016).
Khazanah Astronomi Islam Abad Pertengahan
.
Purwokerto:
UM Purwokerto Press.
Gaya MLA
BUTAR, Arwin, Juli, Rakhmadi, B..
"Khazanah Astronomi Islam Abad Pertengahan".
Purwokerto:
UM Purwokerto Press,
2016.
Text.