APA

Packard D. J., Faulconer J., . (1980). Introduction to logic. New York: D. van Nostrand Company.

Chicago

Packard Dennis J, Faulconer James, . 1980. Introduction to logic. New York: D. van Nostrand Company.

Harvard

Packard D. J., Faulconer J., . (1980). Introduction to logic. New York: D. van Nostrand Company.

MLA

Packard Dennis J, Faulconer James, . Introduction to logic. New York: D. van Nostrand Company. 1980.