Citazione Stile APA (7a Edizione)

Barrett, W. W., Johnson, C. R., & Loewy, R. (1996). The real positive definite completation problem: Cycle completability. American Mathematical Society.

Citazione stile Chigago Style (17a edizione)

Barrett, Wayne W., Charlles R. Johnson, e Raphael Loewy. The Real Positive Definite Completation Problem: Cycle Completability. Providence: American Mathematical Society, 1996.

Citatione MLA (9a ed.)

Barrett, Wayne W., et al. The Real Positive Definite Completation Problem: Cycle Completability. American Mathematical Society, 1996.