APA Style

Warner, Gertrude Chandler. (1990). Blue Bay Mystery : The Boxcar Children #6 . USA: Scholastic INC.

Chicago Style

Warner, Gertrude Chandler. Blue Bay Mystery : The Boxcar Children #6. USA: Scholastic INC, 1990. Text.

MLA Style

Warner, Gertrude Chandler. Blue Bay Mystery : The Boxcar Children #6. USA: Scholastic INC, 1990. Text.

Turabian Style

Warner, Gertrude Chandler. Blue Bay Mystery : The Boxcar Children #6. USA: Scholastic INC, 1990. Print.