APA Style

Kline, Suzy, Remkiewicz, Frank. (1993). Horrible Harry's Secret . USA: Scholastic INC.

Chicago Style

Kline, Suzy, Remkiewicz, Frank. Horrible Harry's Secret. USA: Scholastic INC, 1993. Text.

MLA Style

Kline, Suzy, Remkiewicz, Frank. Horrible Harry's Secret. USA: Scholastic INC, 1993. Text.

Turabian Style

Kline, Suzy, Remkiewicz, Frank. Horrible Harry's Secret. USA: Scholastic INC, 1993. Print.