The supported platforms guide is the bible. Other versions of SCOM may work, but you should discuss that with your LANDESK account manager because if something fails later on, you will need to be sure of how much support you will get.
Now if you told LD during the sale that you were using SCOM 2012 R2 and they confirmed that it will work, then that would be a different sort of conversation for you to have!
Is there any guides about SCOM integration?
There are no guides for SCOM integration specifically. You should look in the Event Manager guide to find out how to setup Event Manager to log events. This can be launched from SCOM via the Event Manager web service or the event logging executables can be configured for SNMP traps.