APA Style

Warner, G, C., Cunningham, D. (1990). Mountain Top Mystery (The Boxcar Children Mysteries, No. 9) . New York, USA: Random House Books for Young Readers.

MLA Style

Warner, Gertrude, Chandler., Cunningham, David. "Mountain Top Mystery (The Boxcar Children Mysteries, No. 9)". New York, USA: Random House Books for Young Readers, 1990. Text.