Não informado. (1970). Geodex Retrieval System for Geotechnical Abstracts. Geodex International.
Style de citation Chicago (17e éd.)Não informado. Geodex Retrieval System for Geotechnical Abstracts. Sonoma, Calif: Geodex International, 1970.
Style de citation MLA (8e éd.)Não informado. Geodex Retrieval System for Geotechnical Abstracts. Geodex International, 1970.
Attention : ces citations peuvent ne pas être correctes à 100%.