Gries, P., Campbell, J., & Montojo, J. [ca. 2014]. Practical programming : an introduction to computer science using Python 3. In Pragmatic programmers (2 nd ed) [Cd]. [Frisco, TX]: The Pragmatic Programmers.

GRIES, Paul, CAMPBELL, Jennifer und MONTOJO, Jason, 2014. Practical programming : an introduction to computer science using Python 3. 2 nd ed. [Frisco, TX]: The Pragmatic Programmers. ISBN 1937785459.

Gries, P., J. Campbell, und J. Montojo. „Practical programming : an introduction to computer science using Python 3“. Pragmatic programmers, 2 nd ed, cd, The Pragmatic Programmers, 2014.

Gries, Paul/Campbell, Jennifer/Montojo, Jason: Practical programming : an introduction to computer science using Python 3, 2 nd ed. Aufl. [Frisco, TX] 2014.

Gries, P., Campbell, J. und Montojo, J. (2014), Practical programming : an introduction to computer science using Python 3, Pragmatic programmers, 2 nd ed., Bd. , The Pragmatic Programmers, [Frisco, TX].