APA (7e ed.) Bronvermelding

Sario, L., Nakai, M., Wang, C., & Chung, L. O. (1977). Classification theory of Riemann manifolds: Harmonic, quasiharmonic and biharmonic functions. Springer-Verlag.

Chicago (17e ed.) Bronvermelding

Sario, Leo, Mitsuru Nakai, Cecilia Wang, en Lung Ock Chung. Classification Theory of Riemann Manifolds: Harmonic, Quasiharmonic and Biharmonic Functions. Berlín: Springer-Verlag, 1977.

MLA (9e ed.) Bronvermelding

Sario, Leo, et al. Classification Theory of Riemann Manifolds: Harmonic, Quasiharmonic and Biharmonic Functions. Springer-Verlag, 1977.