Cita APA (7a ed.)

Diamonds International Awards. (1973). Diamonds-International Awards: 1973. [De Beers Consolidated Mines?].

Cita Chicago Style (17a ed.)

Diamonds International Awards. Diamonds-International Awards: 1973. [London?]: [De Beers Consolidated Mines?], 1973.

Cita MLA (9a ed.)

Diamonds International Awards. Diamonds-International Awards: 1973. [De Beers Consolidated Mines?], 1973.