International Symposium on Global Positioning Systems Gold Coast, Qld., & Queensland. Dept. of Geographic Information. (1988). International symposia: Global positioning systems. : Gold Coast, Queensland 17-19 October, 1988. Dept. of Geographic Information.
Chicago-viite (17. p.)International Symposium on Global Positioning Systems Gold Coast, Qld., ja Queensland. Dept. of Geographic Information. International Symposia: Global Positioning Systems. : Gold Coast, Queensland 17-19 October, 1988. [Brisbane]: Dept. of Geographic Information, 1988.
MLA-viite (8. p.)International Symposium on Global Positioning Systems Gold Coast, Qld., ja Queensland. Dept. of Geographic Information. International Symposia: Global Positioning Systems. : Gold Coast, Queensland 17-19 October, 1988. Dept. of Geographic Information, 1988.