APA استشهاد

Grabowski, R. (1994). Learn autocad 12 in a day. BPB Publications.

استشهاد بنمط شيكاغو

Grabowski, Ralph. Learn Autocad 12 in a Day. New Delhi: BPB Publications, 1994.

MLA استشهاد

Grabowski, Ralph. Learn Autocad 12 in a Day. BPB Publications, 1994.