APA Style
Yeo, J. et al (2013).
New Syllabus additional mathematics (9th edition).
Singapore:
Shinglee Publishers Pte.ltd.
MLA Style
Yeo, Joseph. et al.
"New Syllabus additional mathematics".
9th edition
Singapore:
Shinglee Publishers Pte.ltd,
2013.
Buku SMA Athalia.