Kaler's "Stars and their spectra', 2nd ed, pages 366 -376.
then
Gaposchkin's "The galactic Novae", page 259-285
Executive summary:
Type I - No hydrogen absorption/emmison
Ia - strong SII
Ib - none of the above, but HeI
Ic - lines of light elements ie oxygen and calcium
Type II - Hydrogen lines emmision and/or absorption
All have different light curves
Type Ia - can be found anywhere in the galaxy/ halo (Population II)
Type II -on in the disk (Population I)
See also:
http://en.wikipedia.org/wiki/Supernova
HTH