APA aipamena

Duisberg, P. (1978). Memorandum: Recommendations inf the field of soils.

Chicago Style aipamena

Duisberg, P.C. Memorandum: Recommendations Inf the Field of Soils. 1978.

MLA aipamena

Duisberg, P.C. Memorandum: Recommendations Inf the Field of Soils. 1978.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.