Não informado. (1938). The Paper Industry and Paper World. [s.n.].
Style de citation Chicago (17e éd.)Não informado. The Paper Industry and Paper World. Chicago, Ill: [s.n.], 1938.
Style de citation MLA (8e éd.)Não informado. The Paper Industry and Paper World. [s.n.], 1938.
Attention : ces citations peuvent ne pas être correctes à 100%.