About BLS data diskettes : for use with IBM-compatible microcomputers Lotus 1-2-3 or ASCII file format
MLA
About Bls Data Diskettes: for Use with Ibm-compatible Microcomputers Lotus 1-2-3 Or Ascii File Format. [Washington, DC: U.S. Dept. of Labor, Bureau of Labor Statistics, 1993
APA, 7th edition
(1993). About BLS data diskettes: for use with IBM-compatible microcomputers Lotus 1-2-3 or ASCII file format. [Washington, DC: U.S. Dept. of Labor, Bureau of Labor Statistics
Chicago, 17th edition
About BLS data diskettes: for use with IBM-compatible microcomputers Lotus 1-2-3 or ASCII file format. [Washington, DC: U.S. Dept. of Labor, Bureau of Labor Statistics, 1993