Dyfyniad APA
Derrick, W. R., & Grossman, S. I. (1997). Elementary differential equations (4th ed.). Addison-Wesley.
Dyfyniad Arddull Chicago
Derrick, William R., and Stanley I. Grossman. Elementary Differential Equations. 4th ed. Reading, Mass.: Addison-Wesley, 1997.
Dyfyniad MLA
Derrick, William R., and Stanley I. Grossman. Elementary Differential Equations. 4th ed. Addison-Wesley, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.