APA استشهاد

Nand, B., & Sharma, B. D. (1972). Spherical harmonics and partial differential equations (5th ed.). Kedar Nath Ram Nath publishers.

استشهاد بنمط شيكاغو

Nand, Brahma, و Bhu Dev Sharma. Spherical Harmonics and Partial Differential Equations. 5th ed. Meerut: Kedar Nath Ram Nath publishers, 1972.

MLA استشهاد

Nand, Brahma, و Bhu Dev Sharma. Spherical Harmonics and Partial Differential Equations. 5th ed. Kedar Nath Ram Nath publishers, 1972.