Who writes the news? Read more about professional journalists and their code of ethics.
Society of Professional Journalists: Code of Ethics - pdf | html
Members of the Society of Professional Journalists believe that public enlightenment is the forerunner of justice and the foundation of democracy. The duty of the journalist is to further those ends by seeking truth and providing a fair and comprehensive account of events and issues. Conscientious journalists from all media and specialties strive to serve the public with thoroughness and honesty. Professional integrity is the cornerstone of a journalist's credibility. Members of the Society share a dedication to ethical behavior and adopt this code to declare the Society's principles and standards of practice.
What is a scholarly article? Here are some characteristics.
Many books are also considered scholarly, though they typically do not go through the same peer review process as journals. These are published by university or academic "trade" publishers.
Read more about identifying scholarly sources.