APA (7th ed.) Zitazioa

Flaherty, S., & Ahrens, L. (2016). My Petersburg. Alfred Publishing Co., Inc..

Chicago Style (17th ed.) Zitazioa

Flaherty, Stephen, eta Lynn Ahrens. My Petersburg. Louisville, United States: Alfred Publishing Co., Inc., 2016.

MLA (9th ed.) Zitazioa

Flaherty, Stephen, eta Lynn Ahrens. My Petersburg. Alfred Publishing Co., Inc., 2016.