Cita APA (7th ed.)

Parulis, G., & Larsen-Freeman, D. (2008). Grammar dimensions 4: Form-meaning-use (4a. ed.). Heinle Cengage Learning.

Cita Chicago (17th ed.)

Parulis, Gene, i Diane Larsen-Freeman. Grammar Dimensions 4: Form-meaning-use. 4a. ed. Boston: Heinle Cengage Learning, 2008.

Cita MLA (9th ed.)

Parulis, Gene, i Diane Larsen-Freeman. Grammar Dimensions 4: Form-meaning-use. 4a. ed. Heinle Cengage Learning, 2008.