Gaya APA

Johnson, A, M. (1977). Styles of Folding Mechanics and Mechanisme of folding of Natural Elastic Materials . Amsterdam: Elsevier Scientific Pub. Co..

Gaya MLA

Johnson, Arvid, M.. "Styles of Folding Mechanics and Mechanisme of folding of Natural Elastic Materials". Amsterdam: Elsevier Scientific Pub. Co., 1977. Text.