Probst, J. (2014). Forbidden passage: Dark places. New York: Puffin Books, an imprint of Penguin Group.
Trích dẫn kiểu ChicagoProbst, Jeff. Forbidden Passage: Dark Places. New York: Puffin Books, an imprint of Penguin Group, 2014.
Deismireacht MLAProbst, Jeff. Forbidden Passage: Dark Places. New York: Puffin Books, an imprint of Penguin Group, 2014.
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