Gaya APA
Koh, Caroline. (2007).
Science in focus biology 'n' level practical workbook .
Singapore:
Pearson Longman.
Gaya Chicago
Koh, Caroline.
Science in focus biology 'n' level practical workbook.
Singapore:
Pearson Longman,
2007.
Text.
Gaya MLA
Koh, Caroline.
Science in focus biology 'n' level practical workbook.
Singapore:
Pearson Longman,
2007.
Text.
Gaya Turabian
Koh, Caroline.
Science in focus biology 'n' level practical workbook.
Singapore:
Pearson Longman,
2007.
Print.