Cita APA (7th ed.)

De Souza, ., & Foust, B. (1979). World space economy. Charles E. Merrill.

Cita Chicago (17th ed.)

De Souza, , i Brady Foust. World Space Economy. Columbus, Ohio: Charles E. Merrill, 1979.

Cita MLA (9th ed.)

De Souza, , i Brady Foust. World Space Economy. Charles E. Merrill, 1979.