APA (7th ed.) Citation

Harris, G. (2021). Greensboro FOUR. Cobblestone, 42(1), 20.

Chicago Style (17th ed.) Citation

Harris, Gloria. "Greensboro FOUR." Cobblestone 42, no. 1 (2021): 20.

MLA (9th ed.) Citation

Harris, Gloria. "Greensboro FOUR." Cobblestone, vol. 42, no. 1, 2021, p. 20.