Cita APA (7a ed.)
Will Steffen, A. S. Global Change and the Earth System: A Planet Under Pressure. Springer.
Cita estilo Chicago (17a ed.)
Will Steffen, Angelina Sanderson. Global Change and the Earth System: A Planet Under Pressure. Berlín, Alemania: Springer.
Cita MLA (9a ed.)
Will Steffen, Angelina Sanderson. Global Change and the Earth System: A Planet Under Pressure. Springer.
警告：這些引文格式不一定是100％准確.