Cita APA (7a ed.)

Sommer, H., Petersen, B., & Wittke, P. v. (1993). Safeguarding food quality. Springer.

Cita Chicago Style (17a ed.)

Sommer, Heiner, Brigitte Petersen, y Peter von Wittke. Safeguarding Food Quality. Berlin [etc.]: Springer, 1993.

Cita MLA (9a ed.)

Sommer, Heiner, et al. Safeguarding Food Quality. Springer, 1993.