Gaya APA
Kuwayana, Y.
(1988).
Trademarks & Symbols of the World Design Elements
(
Pertama)
.
Tokyo:
Mitsuru Takashashi.
Gaya MLA
Kuwayana, Yasaburo.
"Trademarks & Symbols of the World Design Elements".
Pertama
Tokyo:
Mitsuru Takashashi,
1988.
Text.