APA Style
Stwertka, Albert. (2002).
A guide to the elements. .
New York:
Usaha Nasional.
Chicago Style
Stwertka, Albert.
A guide to the elements..
New York:
Usaha Nasional,
2002.
Referensi.
MLA Style
Stwertka, Albert.
A guide to the elements..
New York:
Usaha Nasional,
2002.
Referensi.
Turabian Style
Stwertka, Albert.
A guide to the elements..
New York:
Usaha Nasional,
2002.
Referensi.