# Reference for classification of small groups

There are various online resources for the classification of groups of small order, such as this one or that one.

Is there any nice reference in the literature which contains such a classification (say, for orders up to $30$, EDIT: $100$) with detailed proofs? It should only serve as a citation.

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I have thought that classifying small order groups is a routine task and can be used just as you'd use any other routine tools. So, sometimes I see that they are used without proof. But, I cannot find a paper, where, say classification of groups of order 24 is without proof. +1, indeed a nice question. – user21436 May 8 '12 at 8:15
I think several books contain a classification of all groups of order less than 60. See also math.stackexchange.com/a/142155/589. – lhf May 8 '12 at 10:53

Thanks. Indeed, the order $16$ already is quite interesting. (M. Wild, Groups Of Order Sixteen Made Easy). – Martin Brandenburg May 13 '12 at 16:12