BibTeX special features
When referring to more than one author in BibTeX, it is recommended to link the authors with the word "and". If you choose to use BibTeX seriously, then you should get familiar with the way it works. A good documentation can be found in the appendix of the standard LaTeX book by Leslie Lamport, A Document Preparation System, Addison-Wesley. Here I only want to point out the way author names should be entered:
FirstName1 LastName1 and FirstName2 LastName2 and FirstName3 LastName3...
Middle names can simply be put in between. WibTeX will deal with the necessary formatting.