camera rotating on its own

hmm... is there any code with examples on how to either fix the gimbal lock or use quants? unfortunately can't figure out how to call the gimbal lock workaround, there's procedures but no idea how to use em. and i can't figure it out. :/

there's a discussion here but i cannot understand how to use it in my code.
http://www.blitzbasic.com/Community/posts.php?topic=31781