APA

(1999). South Letter - Vol.1-2 No.33. Suiza: South Centre.

Chicago

1999. South Letter - Vol.1-2 No.33. Suiza: South Centre.

Harvard

(1999). South Letter - Vol.1-2 No.33. Suiza: South Centre.

MLA

South Letter - Vol.1-2 No.33. Suiza: South Centre. 1999.