Gaya APA
Tay, Beverly. (2007).
Science in focus biology .
Inggris:
Pearson Longman Asia ELT.
Gaya Chicago
Tay, Beverly.
Science in focus biology.
Inggris:
Pearson Longman Asia ELT,
2007.
Media Cetak.
Gaya MLA
Tay, Beverly.
Science in focus biology.
Inggris:
Pearson Longman Asia ELT,
2007.
Media Cetak.
Gaya Turabian
Tay, Beverly.
Science in focus biology.
Inggris:
Pearson Longman Asia ELT,
2007.
Media Cetak.