Nathan Sayre
Sayre, Nathan F., Ruth Kelty, Mark Simmons, Susan Clayton, Karim-Aly Kassam, Steward T. A. Pickett, and F. S. Chapin III. 2013. “Invitation To Earth Stewardship”. Frontiers In Ecology And The Environment 11 (7): 339 - 339. doi:10.1890/1540-9295-11.7.339.