Dyfyniad APA

Wasserman, P., Georgi, C., & Way, J. (1980). Encyclopeadia of business information sources (4th ed.). Gale Research Company.

Dyfyniad Arddull Chicago

Wasserman, Paul, Charles Georgi, and James Way. Encyclopeadia of Business Information Sources. 4th ed. Detroit: Gale Research Company, 1980.

Dyfyniad MLA

Wasserman, Paul, et al. Encyclopeadia of Business Information Sources. 4th ed. Gale Research Company, 1980.

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