Gaya APA
Desmet, P, M., Fokkinga, S, F. (2020).
Thirteen Fundamental Psychological Needs .
Delft:
Delft University of Technology.
Gaya MLA
Desmet, Pieter, M.A.., Fokkinga, Steven, F..
"Thirteen Fundamental Psychological Needs".
Delft:
Delft University of Technology,
2020.
Computer File.