Popular magazines
Popular magazines like National Geographic or the Economist are aimed towards the general public. They do not expect their readers to have studied or be familiar with the subjects being written about and so are written in a basic introductory way.
These types of publications often use everyday language, contain photographs, advertisements and publish shorter articles that tend not to have references and/or bibliographies.
It is worth noting, however, that these types of publications can still be useful for current awareness issues.
