Romero, A. V. (2010). VirtualBox 3.1: Beginner's guide. Packt Pub..
Chicago Style (17th ed.) CitationRomero, Alfonso V. VirtualBox 3.1: Beginner's Guide. Birmingham, U.K.: Packt Pub., 2010.
MLA (8th ed.) CitationRomero, Alfonso V. VirtualBox 3.1: Beginner's Guide. Packt Pub., 2010.
Warning: These citations may not always be 100% accurate.