*Paris Buttfield-Addison, Jon Manning: "Learning Cocoa with Objective-C", O'Reilly, 3rd Edition 2012, Paperback, ISBN 978-1-4493-1849-9.
* James Duncan Davidson: Learning Cocoa with Objective-C, O’Reilly, 2nd Edition 2002, Paperback, ISBN 0-596-00301-3.