APA (7th ed.) Citation

Hahn, M. D. (1986). Wait till Helen comes: A ghost story. Clarion Books.

Chicago Style (17th ed.) Citation

Hahn, Mary Downing. Wait Till Helen Comes: A Ghost Story. New York: Clarion Books, 1986.

MLA (8th ed.) Citation

Hahn, Mary Downing. Wait Till Helen Comes: A Ghost Story. Clarion Books, 1986.

Warning: These citations may not always be 100% accurate.