Lua APA (7ú heag.)
Cârjă, O., Necula, M., & Vrabie, I. I. (2007). Viability, invariance and applications. Elsevier.
Lua i Stíl Chicago (17ú heag.)
Cârjă, Ovidiu, Mihai Necula, agus I. I. Vrabie. Viability, Invariance and Applications. Amsterdam ; Boston: Elsevier, 2007.
Lua MLA (9ú heag.)
Cârjă, Ovidiu, et al. Viability, Invariance and Applications. Elsevier, 2007.
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