Cita APA (7a ed.)

(2023). Alexander von Humboldt: Perceiving the World. PURDUE UNIVERSITY PRESS.

Cita Chicago Style (17a ed.)

Alexander Von Humboldt: Perceiving the World. [S.l.]: PURDUE UNIVERSITY PRESS, 2023.

Cita MLA (8a ed.)

Alexander Von Humboldt: Perceiving the World. PURDUE UNIVERSITY PRESS, 2023.