Gaya APA
Albrecht, K. (1980).
Brain power: Learn to improve your thinking skills. .
Englewood Cliffs:
Englewood Cliffs Prentice-Hall.
Gaya MLA
Albrecht, Karl.
"Brain power: Learn to improve your thinking skills. ".
Englewood Cliffs:
Englewood Cliffs Prentice-Hall,
1980.
Buku.