Citação norma APA
Parkhurst, J. A. (1906). Researches in Stellar Photometry during the years 1894 to 1906 made chiefly at the Jerkes Observatory.
Citação norma Chicago
Parkhurst, John Adelbert. Researches in Stellar Photometry During the Years 1894 to 1906 Made Chiefly at the Jerkes Observatory. Washington, 1906.
Citação norma MLA
Parkhurst, John Adelbert. Researches in Stellar Photometry During the Years 1894 to 1906 Made Chiefly at the Jerkes Observatory. 1906.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.