Cita APA (7th ed.)

Sorenson, S. (1998). How to write research papers (2nd.). Thomson Learning.

Cita Chicago (17th ed.)

Sorenson, Sharon. How to Write Research Papers. 2nd. Cincinnati: Thomson Learning, 1998.

Cita MLA (9th ed.)

Sorenson, Sharon. How to Write Research Papers. 2nd. Thomson Learning, 1998.