Parker, L. B. (2004). A teaching guide for HRIM 109 (Purchasing management) laboratory: Principles and standards for the selection of food and non-food items in food service systems.
Chicago-viite (17. p.)Parker, Lea B. A Teaching Guide for HRIM 109 (Purchasing Management) Laboratory: Principles and Standards for the Selection of Food and Non-food Items in Food Service Systems. 2004.
MLA-viite (9. p.)Parker, Lea B. A Teaching Guide for HRIM 109 (Purchasing Management) Laboratory: Principles and Standards for the Selection of Food and Non-food Items in Food Service Systems. 2004.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.