ייחוס תמונה:

Heidely-ho Satan! (https://www.flickr.com/photos/frenkieb/4423393/) - Frenkieb - רישיון: Attribution (http://creativecommons.org/licenses/by/2.0/)

Albert_Einstein_Imagination (https://www.flickr.com/photos/wengs/303009640/) - WalkingGeek - רישיון: Attribution (http://creativecommons.org/licenses/by/2.0/)

Blog posting flow chart (https://www.flickr.com/photos/mastababa/3176774028/) - MastaBaba - רישיון: Attribution (http://creativecommons.org/licenses/by/2.0/)

Angel (https://www.flickr.com/photos/ewan_traveler/6540843629/) - ewan traveler - רישיון: Attribution (http://creativecommons.org/licenses/by/2.0/)

injustice (https://www.flickr.com/photos/monsieur-g/4532415752/) - monsieur-g - רישיון: Attribution (http://creativecommons.org/licenses/by/2.0/)

Rubiks Cube (https://www.flickr.com/photos/hartlepool_museum/6856427200/) - Museum of Hartlepool - רישיון: No known copyright restrictions (http://flickr.com/commons/usage/)