Gaya APA
HEYWORTH, REX M, J G R BRIGGS. (2007).
SCIENCE IN FOCUS CHEMISTRY 'O' LEVEL 1st EDITION .
Singapore:
Pearson Longman.
Gaya Chicago
HEYWORTH, REX M, J G R BRIGGS.
SCIENCE IN FOCUS CHEMISTRY 'O' LEVEL 1st EDITION.
Singapore:
Pearson Longman,
2007.
Text.
Gaya MLA
HEYWORTH, REX M, J G R BRIGGS.
SCIENCE IN FOCUS CHEMISTRY 'O' LEVEL 1st EDITION.
Singapore:
Pearson Longman,
2007.
Text.
Gaya Turabian
HEYWORTH, REX M, J G R BRIGGS.
SCIENCE IN FOCUS CHEMISTRY 'O' LEVEL 1st EDITION.
Singapore:
Pearson Longman,
2007.
Print.