APA引文

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

Citación estilo Chicago

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

MLA引文

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

警告：這些引文格式不一定是100％准確.