Cita APA (7th ed.)
Kaljulaid, U., Peetre, J., & Penjam, J. (2006). Semigroups and automata: Selecta, Uno Kaljulaid (1941-1999). IOS.
Cita Chicago (17th ed.)
Kaljulaid, U., Jaak Peetre, i Jaan Penjam. Semigroups and Automata: Selecta, Uno Kaljulaid (1941-1999). Amsterdam ; Washington, DC: IOS, 2006.
Cita MLA (9th ed.)
Kaljulaid, U., et al. Semigroups and Automata: Selecta, Uno Kaljulaid (1941-1999). IOS, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.