First you look for a copyright date on the work itself.
Second a biography of the author will often give creation dates associated with a particular work
Third, a bibliography/discography/filmography will generally be listed in chronological order.
The law has changed and the copyright symbol is no longer needed to insure the protection of the copyright owner. The symbol for copyright is: ©
The first place to look is on the material itself. Then search the copyright records of the national library if necessary.
because
If you're asking about how to obtain a copyright, take a look at this article: http://www.knowthemusicbiz.com/index.php/BIZ-WIKI/Music-Publishing.html
Look for a copyright tag.
Rockland Music and You Look Good Music.
yes it can be, look at the copyright page.
If the website does not post it, then look for any copyright date and use the latest (newest) date. For example, if the copyright says, 'website.com - Copyright 2002-2007', then the published date of the website is 2007.
Sony/ATV, 1996.
Try Amazon, it will let you look inside the book.
Berl Ives
No; since its introduction in the 1909 copyright act, it's always been a c in a circle.