The material does not include exaggeration or significant omissions. It is clearly indicated when recommendations are based on the author's personal opinions. The information reflects a sound background of knowledge and research and is substantial and worthwhile. Authority, author reputation. The author's training and specialization are clearly indicated, as is any organizational support and philosophy.
Preference is given to books published by reputable publishers as opposed to author-published items.
Readability, reading level. The material can be easily understood by a broad sector of the general public. Deviations from this guideline are indicated in the annotations. Books that are carefully organized and easy to understand are given preference, as are materials that avoid the use of jargon. The material was in print and available in mid-1994, when most of the books were evaluated.