APA (7th ed.) Citation

Pogorzelski, H. A., & Ryan, W. J. (1982). Foundations of semiological theory of numbers. Orono Pr.

Chicago Style (17th ed.) Citation

Pogorzelski, H. A., and W. J. Ryan. Foundations of Semiological Theory of Numbers. Orono, Me: Orono Pr, 1982.

MLA (9th ed.) Citation

Pogorzelski, H. A., and W. J. Ryan. Foundations of Semiological Theory of Numbers. Orono Pr, 1982.