APA (7th ed.) Citation

Porcelain, S. E. (1948). The purple pony murders. Partridge Publications.

Chicago Style (17th ed.) Citation

Porcelain, Sidney E. The Purple Pony Murders. [London?]: Partridge Publications, 1948.

MLA (8th ed.) Citation

Porcelain, Sidney E. The Purple Pony Murders. Partridge Publications, 1948.

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