APA
Sommer H. P. B. &. W. P. V., . (1993). Safeguarding food quality. Springer-Verlag, Berlin: .
Chicago
Sommer H Petersen B & Wittke P V, . 1993. Safeguarding food quality. Springer-Verlag, Berlin: .
Harvard
Sommer H. P. B. &. W. P. V., . (1993). Safeguarding food quality. Springer-Verlag, Berlin: .
MLA
Sommer H Petersen B & Wittke P V, . Safeguarding food quality. Springer-Verlag, Berlin: . 1993.