Harvard

To be made up of:

• Author or organisation.
• Year of publication (in round brackets).
• Title of report (in italics).
• Organisation name discussion paper number. 
• Place of publication: publisher (if available).

If accessed on the internet, add:

• Available at: URL/DOI.
• (Accessed: date).

In-text citation:

(Duncan and Trejo, 2011).

Reference list:

Duncan, B. and Trejo, S. J. (2011). Low-skilled immigrants and the U.S. labor market. IZA Discussion Paper no. 5964. Bonn: Institute for the Study of Labor. Available at https://ftp.iza.org/dp5964.pdf (Accessed: 3 March 2016).