Gaya APA
Briggs, Jgr. (2003).
Longman a- level course in chemistry .
Amerika:
Longman.
Gaya Chicago
Briggs, Jgr.
Longman a- level course in chemistry.
Amerika:
Longman,
2003.
.
Gaya MLA
Briggs, Jgr.
Longman a- level course in chemistry.
Amerika:
Longman,
2003.
.
Gaya Turabian
Briggs, Jgr.
Longman a- level course in chemistry.
Amerika:
Longman,
2003.
.