Não informado. (1969). AAS photo-bulletin. American Astronomical Society, Working Group on Photographic Materials.
Chicagoスタイル(17版)引用形式Não informado. AAS Photo-bulletin. Rochester, NY: American Astronomical Society, Working Group on Photographic Materials, 1969.
MLA(8版)引用形式Não informado. AAS Photo-bulletin. American Astronomical Society, Working Group on Photographic Materials, 1969.
警告: この引用は必ずしも正確ではありません.