The formal guidelines for workload, page limit and curriculum is always an agreement made in cooperation with your supervisor, depending on the scope and distribution of workload between research, production and writing in your project.
Guidelines when discussing these issues
You can use the guidelines for teachers and students about the size for assignments.
Please see Projects and exam assignments; types and sizes
Please also have a look at your Curriculum and the appendix to the curricula for information. Find it under Your Programme / Contents of your programme.
You negotiate your references with your supervisor. The rules are once again very flexible and the agreement you reach should consider the correlation with the subject, scope and level of the project.