Styl cytowania APA

Powell, R. E., & Shah, S. M. (1972). Summability theory and its applications.

Styl cytowania Chicago

Powell, R E., i S M. Shah. Summability Theory and Its Applications. Van Nostrand Reinhold Co., London, 1972.

Styl cytowania MLA

Powell, R E., i S M. Shah. Summability Theory and Its Applications. 1972.