- EbookPractical Project Risk Management, Third EditionDavid Hillson
- EbookBook of ProverbsPeter Simon
- EbookComparison of Learning Classical Singing between European and Chinese SingersPeter Simon
- EbookDas vergessene Kreuz von KentuckyPeter Simon
- EbookWeisheiten, Ursachen von Ungleichgewichten und Wege zur GenesungPeter Simon