APA Style

Engel, W, F. (2001). BEG1NN1NG O1RECT3O GAME PROGRAMM1NG (1). : Amerca.

MLA Style

Engel, Wo1fgang, F.. "BEG1NN1NG O1RECT3O GAME PROGRAMM1NG". 1 : Amerca, 2001. BOOK.