Gaya APA
SONS, J, W, &. (1989).
AN INTRODUCATION TO ORDINARY DIFFERENTIAL EQUATIONS .
amerika serikat:
JOHANS WILEY SOON.
Gaya MLA
SONS, JOHN, WILEY, &.
"AN INTRODUCATION TO ORDINARY DIFFERENTIAL EQUATIONS".
amerika serikat:
JOHANS WILEY SOON,
1989.
Text.