Não informado. (1961). American Family Physician. American Academy of General Practice.
Chicagoスタイル(17版)引用形式Não informado. American Family Physician. Kansas City, Kan: American Academy of General Practice, 1961.
MLA(8版)引用形式Não informado. American Family Physician. American Academy of General Practice, 1961.
警告: この引用は必ずしも正確ではありません.