Robles-Pérez, A. M., & Rosales, J. C. The Numerical Semigroup of Phrases' Lengths in a Simple Alphabet. Wiley.
Chicago Style (17th ed.) CitationRobles-Pérez, Aureliano M., and José Carlos Rosales. The Numerical Semigroup of Phrases' Lengths in a Simple Alphabet. Wiley.
MLA (9th ed.) CitationRobles-Pérez, Aureliano M., and José Carlos Rosales. The Numerical Semigroup of Phrases' Lengths in a Simple Alphabet. Wiley.
Warning: These citations may not always be 100% accurate.