APA (7th ed.) Citation

Johnson, M. (1987). GEOSEL transport system (G.T.S.). Dataplex Information Services.

Chicago Style (17th ed.) Citation

Johnson, Mark. GEOSEL Transport System (G.T.S.). Houston, Tex.: Dataplex Information Services, 1987.

MLA (9th ed.) Citation

Johnson, Mark. GEOSEL Transport System (G.T.S.). Dataplex Information Services, 1987.