APA

Sinnott-Armstrong W., Fogelin R. J., . (2015). Understanding arguments: an introduction to informal logic. Australia: Wadsworth, Cengage Learning.

Chicago

Sinnott-Armstrong Walter, Fogelin Robert J, . 2015. Understanding arguments: an introduction to informal logic. Australia: Wadsworth, Cengage Learning.

Harvard

Sinnott-Armstrong W., Fogelin R. J., . (2015). Understanding arguments: an introduction to informal logic. Australia: Wadsworth, Cengage Learning.

MLA

Sinnott-Armstrong Walter, Fogelin Robert J, . Understanding arguments: an introduction to informal logic. Australia: Wadsworth, Cengage Learning. 2015.