APA Style
Speed, Brian. (1990).
GCE O-Level Mathematics .
Singapore:
Longman Singapore.
Chicago Style
Speed, Brian.
GCE O-Level Mathematics.
Singapore:
Longman Singapore,
1990.
Text.
MLA Style
Speed, Brian.
GCE O-Level Mathematics.
Singapore:
Longman Singapore,
1990.
Text.
Turabian Style
Speed, Brian.
GCE O-Level Mathematics.
Singapore:
Longman Singapore,
1990.
Print.