Citazione Stile APA (7a Edizione)

Riggenbach, H., & Samuda, V. (1993). Grammar dimensions: Form, meaning, and use. Heinle & Heinle Publishers.

Citazione stile Chigago Style (17a edizione)

Riggenbach, Heidi, e Virginia Samuda. Grammar Dimensions: Form, Meaning, and Use. Boston: Heinle & Heinle Publishers, 1993.

Citatione MLA (9a ed.)

Riggenbach, Heidi, e Virginia Samuda. Grammar Dimensions: Form, Meaning, and Use. Heinle & Heinle Publishers, 1993.