APA (7th ed.) Citation

Hoyt, W. G. (1980). Planets X and Pluto. University of Arizona Press.

Chicago Style (17th ed.) Citation

Hoyt, William Graves. Planets X and Pluto. Tucson: University of Arizona Press, 1980.

MLA (9th ed.) Citation

Hoyt, William Graves. Planets X and Pluto. University of Arizona Press, 1980.

Warning: These citations may not always be 100% accurate.