Looking for Oracle 11gr2 Grid Infrastructure / ASM on standalone RHEL 6.4 Install Guide.
Please and thanks!
Plus documentation that comes with the installation files for your product. 11gr2 is not a version number it is a marketing label. A version number would be like 22.214.171.124.0. You need to make sure your very specific version is certified for your OS.
How to Install Oracle 11g on Linux with ASM - Oracle Database this is on Oracle Linux not RHEL but I found it useful.
Also you can take a look here http://emarcel.com/installing-oracle-database-11g-r2-on-linux-with-asm/