See this example properly formatted in the QUT Cite tool.
If you are simply referring to a map you can use a standard in-text citation examples as in Getting started - In-text citation.
Any reproduced map must reference the original author and copyright holder. Provide this information below the figure.
Note. From/Adapted from [Description of generated map], by Author, Year, Retrieved Month DD, Year, from https://xxxx.xxx
Note. From [Google Maps directions for driving from QUT Gardens Point, Brisbane, to Noosa Heads, Sunshine Coast] by Google, n.d., Retrieved January 18, 2018 from https://goo.gl/QX2q6R
Map Publisher. (Year). [Description of generated map]. Retrieved Month DD, Year, from https://xxxx.xxx
Google. (n.d.). [Google Maps directions for driving from QUT Gardens Point, Brisbane, to Noosa Heads, Sunshine Coast]. Retrieved January 18, 2018, from https://goo.gl/QX2q6R
If the map has no title, provide a description of the map in square brackets.
Online maps are normally created on the fly, so they will have not published date so use (n.d.).
For Google maps include mode of transportation (walk, drive, train) as map URLs vary.
Include a retrieval date as map is subject to change.