APA

Halliday M. A. K., . (19771975). Learning how to mean: explorations in the development of language. New York: Elsevier.

Chicago

Halliday M A K, . 19771975. Learning how to mean: explorations in the development of language. New York: Elsevier.

Harvard

Halliday M. A. K., . (19771975). Learning how to mean: explorations in the development of language. New York: Elsevier.

MLA

Halliday M A K, . Learning how to mean: explorations in the development of language. New York: Elsevier. 19771975.