Gaya APA
Yenne, B., Sindyarta, B.
().
100 Keajaiban Alam Dunia
.
Jakarta:
Karisma Publishers Group.
Gaya MLA
Yenne, Bill., Sindyarta, Bonifasius.
"100 Keajaiban Alam Dunia".
Jakarta:
Karisma Publishers Group,
.
Text Book.