Can these books be considered valid source of information?

[Pakbabydoll]

101 key ideas in Physics by: Jim Breithaupt
A Brief History of time by: Stephen Hawking
The Universe in a Nut Shell by: Stephen Hawking
Explaning the universe by: Charap


I tried the books I found listed under other questions but unfortuantely our dear library does not have any of them....

[CraigD]

Depends on what you mean by valid sources of information. If you are writing a report for English 101, then yes they are great sources of valid information. If you are attempting to publish in an academic journal, I would find the orginal source material that the information is based off of.

CraigD, AMInstP
www.cymek.com

[Pakbabydoll]

what is this web site?