Johns Hopkins University, entitat editora, entitat de difusió, & Rowland, H. A. (1888). Photographic map of the normal solar spectrum, made with the concave grating: Johns Hopkins University. 2nd series, 1888. Johns Hopkins University.
Cita Chicago Style (17a ed.)Johns Hopkins University, entitat editora, entitat de difusió, y Henry Augustus Rowland. Photographic Map of the Normal Solar Spectrum, Made with the Concave Grating: Johns Hopkins University. 2nd Series, 1888. [Lloc de publicació sense identificar]: Johns Hopkins University, 1888.
Cita MLA (9a ed.)Johns Hopkins University, entitat editora, entitat de difusió, y Henry Augustus Rowland. Photographic Map of the Normal Solar Spectrum, Made with the Concave Grating: Johns Hopkins University. 2nd Series, 1888. Johns Hopkins University, 1888.
