Gaya APA
Rulla, L, M, S, (, , , , ). (1971).
Depth psychology and vocation, a psycho-social perspective. .
Roma dsl:
PUG dsl.
Gaya MLA
Rulla, Luigi, M.,, S.J., (1922-, , , , ).
"Depth psychology and vocation, a psycho-social perspective. ".
Roma dsl:
PUG dsl,
1971.
Buku.