Harkness, H. W. (1964). Elementary olane rigid dynamics: By H. W. Harkness. Academic Press.
Chicago-viite (17. p.)Harkness, Harold Wilson. Elementary Olane Rigid Dynamics: By H. W. Harkness. Ney York: Academic Press, 1964.
MLA-viite (9. p.)Harkness, Harold Wilson. Elementary Olane Rigid Dynamics: By H. W. Harkness. Academic Press, 1964.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.