This book provides fundamental guidance and practical support for writing and publishing empirical scientific papers, such as theses, bachelor's, master's theses, dissertations, and journal articles. It describes the stages of an empirical thesis, including topic selection, literature search, hypothesis generation, research planning, execution and methods of empirical investigations, statistical evaluation, data interpretation, and proper citation. The main citation systems are presented in their latest applicable versions, including the Harvard system (APA system and the regulations of the German Society for Psychology, DGPs) and the Vancouver system (the recommendations of the editors of biomedical journals, ICMJE). It also includes notes on the specific requirements for theses from various German-speaking universities.