APA

United States, . (1988). CD-ROM Test disc 2: technical documentation. Washington: Bureau of the Census.

Chicago

United States, . 1988. CD-ROM Test disc 2: technical documentation. Washington: Bureau of the Census.

Harvard

United States, . (1988). CD-ROM Test disc 2: technical documentation. Washington: Bureau of the Census.

MLA

United States, . CD-ROM Test disc 2: technical documentation. Washington: Bureau of the Census. 1988.