APA aipamena

Sompop Manarungsan. (1978). The history of fertilizer policies in Thailand: An economic study, 1960-1975. s.n.

Chicago Style aipamena

Sompop Manarungsan. The History of Fertilizer Policies in Thailand: An Economic Study, 1960-1975. s.l: s.n, 1978.

MLA aipamena

Sompop Manarungsan. The History of Fertilizer Policies in Thailand: An Economic Study, 1960-1975. s.n, 1978.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.