APA (7th ed.) Citation

Porter, J. G. (1891). Charts and micrometrical Measures of Nebulae, made in the years 1884, 1885, and 1886. Board of Directors of the University.

Chicago Style (17th ed.) Citation

Porter, Jermain Gildersleeve. Charts and Micrometrical Measures of Nebulae, Made in the Years 1884, 1885, and 1886. Cincinnati: Board of Directors of the University, 1891.

MLA (9th ed.) Citation

Porter, Jermain Gildersleeve. Charts and Micrometrical Measures of Nebulae, Made in the Years 1884, 1885, and 1886. Board of Directors of the University, 1891.