Fricke, W. (1968). Precession and galactic rotation derived from fundamental proper motions of distant stars. Astronomisches Rechen-Institut.
Chicago Style (17th ed.) CitationFricke, Walter. Precession and Galactic Rotation Derived from Fundamental Proper Motions of Distant Stars. Heidelberg: Astronomisches Rechen-Institut, 1968.
MLA (9th ed.) CitationFricke, Walter. Precession and Galactic Rotation Derived from Fundamental Proper Motions of Distant Stars. Astronomisches Rechen-Institut, 1968.
Warning: These citations may not always be 100% accurate.