Gaya APA
Erikson, E, H.
(1964).
Insight and responsibility. RPT 345. Human strengths: hal.111-157.
.
New York:
Norton.
Gaya MLA
Erikson, Erik, H..
"Insight and responsibility. RPT 345. Human strengths: hal.111-157. ".
New York:
Norton,
1964.
Buku.