APA (7th ed.) Citation

Opitz, M. F. (1994). Learning centers: Getting them started, keeping them going. Scholastic Professional Books.

Chicago Style (17th ed.) Citation

Opitz, Michael F. Learning Centers: Getting Them Started, Keeping Them Going. New York [u.a.]: Scholastic Professional Books, 1994.

MLA (9th ed.) Citation

Opitz, Michael F. Learning Centers: Getting Them Started, Keeping Them Going. Scholastic Professional Books, 1994.