Escultura, E. E. (1991). Introduction to qualitative control theory / Edgar E. Escultura. Kalikasan Press.
Lua i Stíl Chicago (17ú heag.)Escultura, Eddie E. Introduction to Qualitative Control Theory / Edgar E. Escultura. Manila: Kalikasan Press, 1991.
Lua MLA (9ú heag.)Escultura, Eddie E. Introduction to Qualitative Control Theory / Edgar E. Escultura. Kalikasan Press, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.