Gaya APA
Howard, V. (1976).
The power of psycho-pictography: The cosmic key to the inner mind. .
Wellingborough:
Wellingborough A Thomas & Co.
Gaya MLA
Howard, Vernon.
"The power of psycho-pictography: The cosmic key to the inner mind. ".
Wellingborough:
Wellingborough A Thomas & Co,
1976.
Buku.