Não informado. (1965). Foundation Facts. Raymond International, Raymond Concrete Pile Division.
Style de citation Chicago (17e éd.)Não informado. Foundation Facts. New York: Raymond International, Raymond Concrete Pile Division, 1965.
Style de citation MLA (8e éd.)Não informado. Foundation Facts. Raymond International, Raymond Concrete Pile Division, 1965.
Attention : ces citations peuvent ne pas être correctes à 100%.