APA-viite

Ovsiannikov, L. V. (1982). Group analysis of differential equations. Academic Press.

Chicago-tyylinen lähdeviittaus

Ovsiannikov, L V. Group Analysis of Differential Equations. New York: Academic Press, 1982.

MLA-viite

Ovsiannikov, L V. Group Analysis of Differential Equations. Academic Press, 1982.