APA Style

Langacker, R, W. (1967). Language and its structure: Some fundamental linguistic concepts (2nd ed.) (2nd ed.). New York: Harcourt Brace Jovanovich.

MLA Style

Langacker, Ronald, W.. "Language and its structure: Some fundamental linguistic concepts (2nd ed.)". 2nd ed. New York: Harcourt Brace Jovanovich, 1967. Text.