Dissertation /thesis format presupposes definite set of rules according to which certain dissertations should be written. As for dissertation papers, you know that they can be written on various disciplines and these disciplines determine a dissertation/thesis format for each dissertation papers. If you think that, it is very difficult then you should know that the quantity of dissertation/thesis formats is not big, that’s why it won’t be difficult to find out what dissertation/thesis format is suitable for your own dissertation paper.
There are two main fields according to which dissertation/thesis formats can be distinguished. The first field is Humanities ad the second one is Sciences. According to these two fields, dissertation/thesis formats are divided. If you write dissertation paper, which is connected with Humanities, then you may write dissertation in such formats as MLA, Turabian and Chicago formats. If we speak about Sciences, there are APA format and Vancouver format. All above mentioned formats are used for writing such academic papers as research papers and dissertations. There are other formats, which are mostly used for things, which are not connected with education. These formats are used for things, which are already published in serious editions.
If you don’t have any useful information about such matter as dissertation/thesis format, then you can try to find necessary information in the Internet. As you know, the Internet is the largest source of information in a modern world. If you don’t know something and there isn’t anybody who can answer your questions, then you can try to find these answers in the Internet.