Gaya APA

LEVENS,A.S, . (1962). GRAPHICS:WITH AN INTRODUCTION TO CONCEPTUAL DESIGN . New York: JOHN WILEY & SONS, New York.

Gaya MLA

LEVENS,A.S, . "GRAPHICS:WITH AN INTRODUCTION TO CONCEPTUAL DESIGN". New York: JOHN WILEY & SONS, New York, 1962. Textbook.