APA (7th ed.) Citation

Learning Seed Company & Phyfer, D. (1998). Why can't Michael pay attention?: [understanding ADHD]. Learning Seed.

Chicago Style (17th ed.) Citation

Learning Seed Company and David Phyfer. Why Can't Michael Pay Attention?: [understanding ADHD]. Chicago, IL: Learning Seed, 1998.

MLA (9th ed.) Citation

Learning Seed Company and David Phyfer. Why Can't Michael Pay Attention?: [understanding ADHD]. Learning Seed, 1998.