Below is an example. The words in italics (summary and evaluation) do not need to be in your work; they are here just for the clarity of the example.
Subject: Aircraft Design
Cleer, I. (1994). Powered flight. Columbus, OH: Ohio University Press.
This book is a brief history of the evolution of the airplane, beginning with the Wright
Brothers and continuing up to 1992. (summary) The author is a professor of aerospace engineering, which gives him good credibility, and the book contains a substantial bibliography.
Therefore, the information is likely to be accurate, reliable and without bias. However, because there have been many developments in powered flight in the last 20 years, this book may be of limited value except to provide the groundwork for understanding the early development of aircraft . (evaluation)
Harrumph, H. H. (2011). Choosing the right plane: An economist’s perspective. Journal of Applied Economics, 23, 124-142. doi: 14.3085722
The article details the author’s 15-year study of four different airlines, focusing on decisions regarding the choices of types of aircraft and how these choices affected each airline’s bottom line. (summary) This journal is peer reviewed; therefore, the information should be credible, reliable and without bias. The publication date is relatively recent; therefore, the information is relatively current. Also, an economist could provide a unique perspective on aircraft design, which is usually considered only from the technical or human factors point of view. (evaluation)
The following link to Purdue University’s Online Writing Laboratory (OWL) gives an excellent explanation of the annotated bibliography and additional examples.
OWL at Purdue: http://owl.english.purdue.edu/owl/owlprint/614/