Gaya APA

WILSON, C, W, A, P. (1980). AGRICULTURE IN THE TROPICS SECOND EDITION . LONDON, INGGRIS: LONGMAN GROUP LIMITED.

Gaya MLA

WILSON, C.C., WEBSTER, AND, P.N.. "AGRICULTURE IN THE TROPICS SECOND EDITION". LONDON, INGGRIS: LONGMAN GROUP LIMITED, 1980. Text.