Gaya APA
Rex M Heyworth, J G R Briggs. (2007).
Complete Guide to O Level Chemistry 3 rd Edition .
Singapore:
Pearson Longman.
Gaya Chicago
Rex M Heyworth, J G R Briggs.
Complete Guide to O Level Chemistry 3 rd Edition.
Singapore:
Pearson Longman,
2007.
Text.
Gaya MLA
Rex M Heyworth, J G R Briggs.
Complete Guide to O Level Chemistry 3 rd Edition.
Singapore:
Pearson Longman,
2007.
Text.
Gaya Turabian
Rex M Heyworth, J G R Briggs.
Complete Guide to O Level Chemistry 3 rd Edition.
Singapore:
Pearson Longman,
2007.
Print.