For a general reference to the website as a whole:

Sumathi Ramaswamy, ‘Going Global in Mughal India’ (http://sites.duke.edu/globalinmughalindia/), accessed on […]

For a reference to a specific illustration from the album:

See ‘[Title]’ in Ramaswamy, ‘Going Global in Mughal India’ (http://sites.duke.edu/globalinmughalindia/), accessed on […]

For a reference to analysis from the website or album:

Please cite appropriate page numbers in Ramaswamy, ‘Going Global in Mughal India’ (http://sites.duke.edu/globalinmughalindia/), accessed on […]