APA (7th ed.) Citation

Keppe, N. R. (1990). Trabalho & capital. Proton.

Chicago Style (17th ed.) Citation

Keppe, Norberto R. Trabalho & Capital. Proton, 1990.

MLA (8th ed.) Citation

Keppe, Norberto R. Trabalho & Capital. Proton, 1990.

Warning: These citations may not always be 100% accurate.