Cita APA (7th ed.)

Guthrie, R. K. (1980). Food sanitation (2a. ed.). Avi.

Cita Chicago (17th ed.)

Guthrie, Rufus K. Food Sanitation. 2a. ed. Westport: Avi, 1980.

Cita MLA (9th ed.)

Guthrie, Rufus K. Food Sanitation. 2a. ed. Avi, 1980.