Παραπομπή APA

Graf, H. (1975). Vaidyuta engineering atistana tatvangal. Institute of languages.

Παραπομπή Chicago Style

Graf, Heinz. Vaidyuta Engineering Atistana Tatvangal. Trivandrum: Institute of languages, 1975.

Παραπομπή MLA

Graf, Heinz. Vaidyuta Engineering Atistana Tatvangal. Institute of languages, 1975.