Citazione APA

Heider, L. J., & Simpson, J. E. (1967). Theoretical analysis. Saunders.

Stile di citazione Chicago

Heider, Lester J., e James Edward Simpson. Theoretical Analysis. Philadelphia: Saunders, 1967.

Citazione MLA

Heider, Lester J., e James Edward Simpson. Theoretical Analysis. Saunders, 1967.