COOPER, Peter, 2009. Beginning Ruby : from novice to professional. 2 nd ed. Berkeley, Calif.: Apress. ISBN 1430223634.
Elsevier - Harvard (with titles)Cooper, P., 2009. Beginning Ruby : from novice to professional, 2 nd ed. ed, Expert’s voice in open source. Apress, Berkeley, Calif.
American Psychological Association 7th editionCooper, P. (ca. 2009). Beginning Ruby : from novice to professional [Cd]. In Expert’s voice in open source (2 nd ed). Apress.
Springer - Basic (author-date)Cooper P (2009) Beginning Ruby : from novice to professional, 2 nd ed. Apress, Berkeley, Calif
Juristische Zitierweise (Stüber) (Deutsch)Cooper, Peter, Beginning Ruby : from novice to professional, 2 nd ed , Berkeley, Calif. 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.