Pountain, D. (1987). Object oriented forth: Implementation of data structures. Academic Press.
Chicago-viite (17. p.)Pountain, Dick. Object Oriented Forth: Implementation of Data Structures. London: Academic Press, 1987.
MLA-viite (9. p.)Pountain, Dick. Object Oriented Forth: Implementation of Data Structures. Academic Press, 1987.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.