United States. Agricultural Research Service. Human Nutrition Research Division. Apples in Appealing Ways [1969].
Chicago-viite (17. p.)United States. Agricultural Research Service. Human Nutrition Research Division. Apples in Appealing Ways [1969].
MLA-viite (9. p.)United States. Agricultural Research Service. Human Nutrition Research Division. Apples in Appealing Ways [1969].
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.