APA (7th ed.) Citation

Ashley, P. J. (1993). American newspaper publishers, 1950-1990. Gale Research.

Chicago Style (17th ed.) Citation

Ashley, Perry J. American Newspaper Publishers, 1950-1990. Detroit: Gale Research, 1993.

MLA (9th ed.) Citation

Ashley, Perry J. American Newspaper Publishers, 1950-1990. Gale Research, 1993.

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