APA

South African Mining Journal Syndicate, . (1951). South African Mining and Engineering Journal. Johannesburg: South African Mining Journal Syndicate.

Chicago

South African Mining Journal Syndicate, . 1951. South African Mining and Engineering Journal. Johannesburg: South African Mining Journal Syndicate.

Harvard

South African Mining Journal Syndicate, . (1951). South African Mining and Engineering Journal. Johannesburg: South African Mining Journal Syndicate.

MLA

South African Mining Journal Syndicate, . South African Mining and Engineering Journal. Johannesburg: South African Mining Journal Syndicate. 1951.