Gaya APA
Wahyudin,M.Pd, P, D. (2007).
Bumi dan ruang angkasa : Sets (science, environment, technology & society
- .
Jakara:
Ar,adelta.
Gaya MLA
Wahyudin,M.Pd, Prof., Dr..
"Bumi dan ruang angkasa : Sets (science, environment, technology & society
-".
Jakara:
Ar,adelta,
2007.
Text.