American Psychological Association 6th edition

Singh, U. B., & Singh, S. N. (n.d.). Certain basic hypergeometric identities.

ISO-690 (author-date, English)

SINGH, U. B. and SINGH, S. N., [no date]. Certain basic hypergeometric identities. .

Modern Language Association 9th edition

Singh, U. B., and S. N. Singh. Certain Basic Hypergeometric Identities.

Mohr Siebeck - Recht (Deutsch - Österreich)

Singh, U. B./Singh, S. N.: Certain basic hypergeometric identities,

Emerald - Harvard

Singh, U.B. and Singh, S.N. (n.d.). “Certain basic hypergeometric identities”.

Warning: These citations may not always be 100% accurate.