Citazione APA

Erneholm, I. (1948). Cacao production of South America: Historical development and present geographical distribution.

Stile di citazione Chicago

Erneholm, Ivar. Cacao Production of South America: Historical Development and Present Geographical Distribution. Gothenburg, 1948.

Citazione MLA

Erneholm, Ivar. Cacao Production of South America: Historical Development and Present Geographical Distribution. 1948.

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