Quellenverzeichnis S. 50: oben von links © iStock/ajt; © iStock/bonetta; © fotolia/StockPhotosArt; © iStock/ARSELA; Mitte von links © fotolia/Sergii Figurnyi (Krakau); © Thinkstock/Hemera/Jan Hanus (Buch); © iStock/workinc ; © Thinkstock/iStock/Tatyana Nyshko; © Thinkstock/Photodisc/Thomas Northcut; © Thinkstock/Hemera/Gediminas Zalgevicius; unten von links © fotolia/Birgit Reitz-Hofmann; © iStock/garysludden; © Thinkstock/iStock/CreativeBrainStorming; © fotolia/Alexandra Karamyshev; © iStock/GlobalP S. 51: von links © fotolia/nyul; © iStock/DRB Images, LLC; © iStock/Johnny Greig S. 53: © iStock/Monkey Business Images S. 54: Krawatte © fotolia/Birgit Reitz-Hofmann; Handschuhe © iStock/garysludden; Pullover © fotolia/Alexandra Karamyshev S. 55: Rose © iStock/workinc; Handkuss © iStock/simazoran