The Chicago 17th style is a footnote referencing style.
Information for this guide is from The Chicago Manual of Style Online, 17th ed., 2017. Consult the manual for more comprehensive information.
In the Chicago 17th, you reference by providing a footnote number within the text of the document (in-text citation)
Add a corresponding footnote citation at the bottom of the page with full or brief details of the source. The footnote citation also includes the page number/s.
You then add the related entry to the bibliography at the end of your document. The bibliography entry (author, title, source, date) provides the full details of the reference.
This highlights how composers musically interpreted the words of madrigal poetry and examined the literary context of the genre.2
2. Jerome Roche. The Madrigal (Oxford, Oxford University Press, 1990), 54.
2. Roche. The Madrigal, 54.
Roche, Jerome. The Madrigal. Oxford: Oxford University Press, 1990.