APA (7th ed.) Citation

DF, G. (2010). When illness strikes. Occupational health & safety (Waco, Tex.), 79(4), 20.

Chicago Style (17th ed.) Citation

DF, Groce. "When Illness Strikes." Occupational Health & Safety (Waco, Tex.) 79, no. 4 (2010): 20.

MLA (9th ed.) Citation

DF, Groce. "When Illness Strikes." Occupational Health & Safety (Waco, Tex.), vol. 79, no. 4, 2010, p. 20.