APA (7th ed.) Citation
Ridenour, F. (1967). So, What's the Difference? GL Regal Books, A Division of G/L Publicaitons.
Chicago Style (17th ed.) Citation
Ridenour, Fritz. So, What's the Difference? Glendale, CA: GL Regal Books, A Division of G/L Publicaitons, 1967.
MLA (9th ed.) Citation
Ridenour, Fritz. So, What's the Difference? GL Regal Books, A Division of G/L Publicaitons, 1967.
Warning: These citations may not always be 100% accurate.