Gaya APA
Braun, K., Passon, J. (2020).
Across the Sahara (1st ed. 2020).
:
Springer International Publishing.
Gaya MLA
Braun, Klaus., Passon, Jacqueline.
"Across the Sahara".
1st ed. 2020
:
Springer International Publishing,
2020.
Electronic Resource.