Cita APA (7th ed.)

GUTH, H. P. (1969). Concise english handbook.-- Ed.2. Wadsworth.

Cita Chicago (17th ed.)

GUTH, Hans P. Concise English Handbook.-- Ed.2. California: Wadsworth, 1969.

Cita MLA (9th ed.)

GUTH, Hans P. Concise English Handbook.-- Ed.2. Wadsworth, 1969.