APA

Kaufman P., Bradby D., Owings J. & National Center for Education Statistics. (1992). National education longitudinal study of 1988: characteristics of at-risk students in NELS:88. Washington: National Center for Education Statistics.

Chicago

Kaufman Phillip, Bradby Denise, Owings Jeffrey and National Center for Education Statistics. 1992. National education longitudinal study of 1988: characteristics of at-risk students in NELS:88. Washington: National Center for Education Statistics.

Harvard

Kaufman P., Bradby D., Owings J. and National Center for Education Statistics. (1992). National education longitudinal study of 1988: characteristics of at-risk students in NELS:88. Washington: National Center for Education Statistics.

MLA

Kaufman Phillip, Bradby Denise, Owings Jeffrey and National Center for Education Statistics. National education longitudinal study of 1988: characteristics of at-risk students in NELS:88. Washington: National Center for Education Statistics. 1992.