Warda, M. (2004). How to register your own copyright (5th ed.). Sphinx Pub..
Chicago Style (17th ed.) CitationWarda, Mark. How to Register Your Own Copyright. 5th ed. Naperville, Ill.: Sphinx Pub., 2004.
ציטוט MLAWarda, Mark. How to Register Your Own Copyright. 5th ed. Sphinx Pub., 2004.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.