APA Style
Keenan, Sheila. (1999).
What Time Is It? A Book of Math Riddles .
New York:
Scholastic.
Chicago Style
Keenan, Sheila.
What Time Is It? A Book of Math Riddles.
New York:
Scholastic,
1999.
Book.
MLA Style
Keenan, Sheila.
What Time Is It? A Book of Math Riddles.
New York:
Scholastic,
1999.
Book.
Turabian Style
Keenan, Sheila.
What Time Is It? A Book of Math Riddles.
New York:
Scholastic,
1999.
Book.