APA (7th ed.) Citation

Vivar, G. (2005). A first in Peru. GFR: Geotechnical Fabrics Report, 23(1), 11.

Chicago Style (17th ed.) Citation

Vivar, Germán. "A First in Peru." GFR: Geotechnical Fabrics Report 23, no. 1 (2005): 11.

MLA (9th ed.) Citation

Vivar, Germán. "A First in Peru." GFR: Geotechnical Fabrics Report, vol. 23, no. 1, 2005, p. 11.