Gaya APA

Langacker, R, W. (1973). Language and its structure : some fundamental linguistic concepts (2nd ed.). San Diego: Harcourt Brace Jovanovich Pub..

Gaya MLA

Langacker, Ronald, W.. "Language and its structure : some fundamental linguistic concepts". 2nd ed. San Diego: Harcourt Brace Jovanovich Pub., 1973. Text.