Gaya APA
Khanwalkar, K. (2005).
Longman Complete Guide To 'O'Level BIOLOGY .
SINGAPORE:
Pearson Education South PTE Ltd.
Gaya MLA
Khanwalkar, Karuna.
"Longman Complete Guide To 'O'Level BIOLOGY".
SINGAPORE:
Pearson Education South PTE Ltd,
2005.
Text.