APA (7th ed.) Citation

Scharpf, F. W., Reissert, B., & Schnabel, F. (1975). Control deficits in multi-level problem solving.

Chicago Style (17th ed.) Citation

Scharpf, Fritz W., B. Reissert, and F. Schnabel. Control Deficits in Multi-level Problem Solving. Berlin, 1975.

MLA (9th ed.) Citation

Scharpf, Fritz W., et al. Control Deficits in Multi-level Problem Solving. 1975.