APA (7th ed.) Citation

Houghton, F. (1949). The blue circle gang: A Canadian adventure story. T. Nelson & Sons.

Chicago Style (17th ed.) Citation

Houghton, Frank. The Blue Circle Gang: A Canadian Adventure Story. Toronto: T. Nelson & Sons, 1949.

MLA (9th ed.) Citation

Houghton, Frank. The Blue Circle Gang: A Canadian Adventure Story. T. Nelson & Sons, 1949.

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