Cita APA (7a ed.)

Sum, A. M., Harrington, P. E., & Goedicke, W. (1987). One-fifth of the nation's teenagers: Employment problems of poor youth in America. Youth & society, 18(3), 195-237.

Cita Chicago Style (17a ed.)

Sum, Andrew M., Paul E. Harrington, y William Goedicke. "One-fifth of the Nation's Teenagers: Employment Problems of Poor Youth in America." Youth & Society 18, no. 3 (1987): 195-237.

Cita MLA (9a ed.)

Sum, Andrew M., et al. "One-fifth of the Nation's Teenagers: Employment Problems of Poor Youth in America." Youth & Society, vol. 18, no. 3, 1987, pp. 195-237.