APA (7th ed.) Citation

Day, D. B. (1952). Index to the science-fiction magazines, 1926-1950. Perri Press.

Chicago Style (17th ed.) Citation

Day, Donald B. Index to the Science-fiction Magazines, 1926-1950. Portland, Or.: Perri Press, 1952.

MLA (8th ed.) Citation

Day, Donald B. Index to the Science-fiction Magazines, 1926-1950. Perri Press, 1952.