APA (7th ed.) Citation

Andreescu, T., Boreico, I., Mushkarov, O., & Nikolov, N. (2012). Topics in functional equations. XYZ Press.

Chicago Style (17th ed.) Citation

Andreescu, Titu, Iurie Boreico, Oleg Mushkarov, and Nikolei Nikolov. Topics in Functional Equations. Plano, TX: XYZ Press, 2012.

MLA (9th ed.) Citation

Andreescu, Titu, et al. Topics in Functional Equations. XYZ Press, 2012.