Citazione APA

Kirk, A., & Anthony Kirk. A: Adolph B. Spreckels and the rise of the California petroleum industry. California historical society.

Stile di citazione Chicago

Kirk, Anthony, e Anthony Kirk. A: Adolph B. Spreckels and the Rise of the California Petroleum Industry. California historical society.

Citazione MLA

Kirk, Anthony, e Anthony Kirk. A: Adolph B. Spreckels and the Rise of the California Petroleum Industry. California historical society.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.