使用下面中的词汇中的三个词汇造三个句子：Format,Publication,Credibility,Uniform,Acknowledge,Professional courtesy

1. The format of the publication was easy to read and understand.
2. The credibility of the article was questioned due to a lack of sources.
3. It is important to acknowledge the contributions of others when publishing research.
4. The uniform of the employees added to the professional courtesy of the company.
5. Professional courtesy should be extended to all colleagues, regardless of their position.
6. The publication was not accepted due to a lack of professionalism and credibility.