APA Style
Siegel, F, R. (2015).
Countering 21st Century Social-Environmental Threats to Growing Global Populations (1).
Sine loco:
Springer Cham.
MLA Style
Siegel, Frederic, R..
"Countering 21st Century Social-Environmental Threats to Growing Global Populations".
1
Sine loco:
Springer Cham,
2015.
Text.