APA Style
Levy, Michael. (2009).
Rocks and minerals .
Philadelpia:
Ency-Britannica.
Chicago Style
Levy, Michael.
Rocks and minerals.
Philadelpia:
Ency-Britannica,
2009.
Referensi.
MLA Style
Levy, Michael.
Rocks and minerals.
Philadelpia:
Ency-Britannica,
2009.
Referensi.
Turabian Style
Levy, Michael.
Rocks and minerals.
Philadelpia:
Ency-Britannica,
2009.
Referensi.