APA (7th ed.) Citation

Scolar Press, Stevens, W., & Picasso, P. (1977). The blue guitar. Petersburg Press.

Chicago Style (17th ed.) Citation

Scolar Press, Wallace Stevens, and Pablo Picasso. The Blue Guitar. London: Petersburg Press, 1977.

MLA (9th ed.) Citation

Scolar Press, et al. The Blue Guitar. Petersburg Press, 1977.