एपीए उद्धरण

Rockland ,C. (1975). Hypoellipticity and Eigenvalue Asymptotics. Springer-Verlag.

शिकागो स्टाइल उद्धरण

Rockland ,C. Hypoellipticity and Eigenvalue Asymptotics. Berlin: Springer-Verlag, 1975.

एमएलए उद्धरण

Rockland ,C. Hypoellipticity and Eigenvalue Asymptotics. Springer-Verlag, 1975.