एपीए उद्धरण

Fritz John (1910-. (1981). Partial differential equations (with 25 figures). New York: Spriger-Verlag.

शिकागो स्टाइल उद्धरण

Fritz John (1910-. Partial Differential Equations (with 25 Figures). New York: Spriger-Verlag, 1981.

एमएलए उद्धरण

Fritz John (1910-. Partial Differential Equations (with 25 Figures). New York: Spriger-Verlag, 1981.