Gakushūin University Library has a one-pager describing trustworthy Japanese resources.
The process of evaluating each resource you use for research is universal, whether you are using English or Japanese resources. The following tools will further help you refine your skills for evaluation.
This resource will provide guiding questions to help you to analyze the authority, accuracy and scope of your information materials to assess how appropriate they will be for your research. Keep in mind that many publications have a particular bias or agenda, which may not be obvious at first glance.