Nand, B., & Sharma, B. D. (1972). Spherical harmonics and partial differential equations (5th ed.). Kedar Nath Ram Nath publishers.
Citação norma ChicagoNand, Brahma, and Bhu Dev Sharma. Spherical Harmonics and Partial Differential Equations. 5th ed. Meerut: Kedar Nath Ram Nath publishers, 1972.
Citação norma MLANand, Brahma, and Bhu Dev Sharma. Spherical Harmonics and Partial Differential Equations. 5th ed. Kedar Nath Ram Nath publishers, 1972.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.