Cita APA (7a ed.)

Smith, S. L., Romanovsky, V. E., Lewkowicz, A. G., Burn, C. R., Allard, M., Clow, G. D., . . . Throop, J. (2010). Active layer thickness and ground temperatures during 1991-2008 at permafrost sites in northern North America. PANGAEA.

Cita Chicago Style (17a ed.)

Smith, S L., Vladimir E. Romanovsky, Antoni G. Lewkowicz, C R. Burn, Maël Allard, Gary D. Clow, Kenji Yoshikawa, y J. Throop. Active Layer Thickness and Ground Temperatures During 1991-2008 at Permafrost Sites in Northern North America. PANGAEA, 2010.

Cita MLA (9a ed.)

Smith, S L., et al. Active Layer Thickness and Ground Temperatures During 1991-2008 at Permafrost Sites in Northern North America. PANGAEA, 2010.