Langeveld, Martin. "NAA chief on Q4: “Velocity of ad decline is moderating”." Nieman Journalism Lab. Nieman Foundation for Journalism at Harvard, 25 Mar. 2010. Web. 8 Jun. 2023.
APA
Langeveld, M. (2010, Mar. 25). NAA chief on Q4: “Velocity of ad decline is moderating”. Nieman Journalism Lab. Retrieved June 8, 2023, from https://www.niemanlab.org/2010/03/naa-chief-on-q4-velocity-of-ad-decline-is-moderating/
Chicago
Langeveld, Martin. "NAA chief on Q4: “Velocity of ad decline is moderating”." Nieman Journalism Lab. Last modified March 25, 2010. Accessed June 8, 2023. https://www.niemanlab.org/2010/03/naa-chief-on-q4-velocity-of-ad-decline-is-moderating/.
Wikipedia
{{cite web
| url = https://www.niemanlab.org/2010/03/naa-chief-on-q4-velocity-of-ad-decline-is-moderating/
| title = NAA chief on Q4: “Velocity of ad decline is moderating”
| last = Langeveld
| first = Martin
| work = [[Nieman Journalism Lab]]
| date = 25 March 2010
| accessdate = 8 June 2023
| ref = {{harvid|Langeveld|2010}}
}}
