APA (7th ed.) Citation

Gilbert, J., Perry, R., Laboratories, H. P., & Archives, T. P. S. U. C. A Java API for X.509 Proxy Certificates. http://www.hpl.hp.com/techreports/2008/HPL-2008-77.pdf.

Chicago Style (17th ed.) Citation

Gilbert, John, Russell Perry, Hewlett Packard Laboratories, and The Pennsylvania State University CiteSeerX Archives. "A Java API for X.509 Proxy Certificates." Http://www.hpl.hp.com/techreports/2008/HPL-2008-77.pdf .

MLA (9th ed.) Citation

Gilbert, John, et al. "A Java API for X.509 Proxy Certificates." Http://www.hpl.hp.com/techreports/2008/HPL-2008-77.pdf, .