Cita APA (7a ed.)

Kellman, R. (1947). English and portuguese commercial correspondence (4.ed.). Nacional São Paulo Editora.

Cita Chicago Style (17a ed.)

Kellman, Rudyard. English and Portuguese Commercial Correspondence. 4.ed. São Paulo, SP: Nacional São Paulo Editora, 1947.

Cita MLA (9a ed.)

Kellman, Rudyard. English and Portuguese Commercial Correspondence. 4.ed. Nacional São Paulo Editora, 1947.