How to cite a lab manual?
BibTeX knows how to deal with this, using the entry type @manual:

@manual{abc,
    organization = {University of Neverland},
    author = {John Doe},
    title = {Manual for ABC123},
    year = {2012},
}


If you don't know the author because it is not listed in the document, you can omit the field. The name of the university will be used instead.