Gaya APA
Purba, Michael. (1997).
Kimia 3a (1997) .
Jakarta:
Erlangga.
Gaya Chicago
Purba, Michael.
Kimia 3a (1997).
Jakarta:
Erlangga,
1997.
Printed Book.
Gaya MLA
Purba, Michael.
Kimia 3a (1997).
Jakarta:
Erlangga,
1997.
Printed Book.
Gaya Turabian
Purba, Michael.
Kimia 3a (1997).
Jakarta:
Erlangga,
1997.
Printed Book.