Gaya APA
clark, jim. (2009).
EDEXCEL IGCSE CHEMISTRY .
China:
pearson education limited.
Gaya Chicago
clark, jim.
EDEXCEL IGCSE CHEMISTRY.
China:
pearson education limited,
2009.
Text.
Gaya MLA
clark, jim.
EDEXCEL IGCSE CHEMISTRY.
China:
pearson education limited,
2009.
Text.
Gaya Turabian
clark, jim.
EDEXCEL IGCSE CHEMISTRY.
China:
pearson education limited,
2009.
Print.