Παραπομπή APA

Higgins, R. (1970). Engineering Metallurgy (2ne ed.). Hodder and Stoughton.

Παραπομπή Chicago Style

Higgins, R.A. Engineering Metallurgy. 2ne ed. London: Hodder and Stoughton, 1970.

Παραπομπή MLA

Higgins, R.A. Engineering Metallurgy. 2ne ed. Hodder and Stoughton, 1970.