Government publications can take a lot of different formats and the information provided to create a citation varies from document to document. For example, sometimes there are authors, other times there are not. If an item doesn't have a piece of information, such as an author, simply skip it. However, always include as much information as possible.
Basic Format:
Author(s). Chapter Title. Document Title; Government Publication Number; Publishing Agency: Place of Publication, Year; Pages.
Example:
Hutto, W. H.; Bussman, R. W. Juice Grapes Lodi district Origin. A Brief Review of the 1951 Lodi Tokay Grape Season; U.S. Department of Agriculture; Lodi, CA, 1952; 10.