Burton, W. B. (1970). The Sagittarius spiral arm and the general distribution of hydrogen between 0° and 90° longitude: Streaming and geometrical effects of the derivation density ([1st ed.].). Rijksuniversitet.
Citace podle Chicago (17th ed.)Burton, William Butler. The Sagittarius Spiral Arm and the General Distribution of Hydrogen Between 0° and 90° Longitude: Streaming and Geometrical Effects of the Derivation Density. [1st ed.]. Leiden: Rijksuniversitet, 1970.
Citace podle MLA (9th ed.)Burton, William Butler. The Sagittarius Spiral Arm and the General Distribution of Hydrogen Between 0° and 90° Longitude: Streaming and Geometrical Effects of the Derivation Density. [1st ed.]. Rijksuniversitet, 1970.
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