Стиль цитування APA (7-ме видання)

Ravera, O. (1989). Ecological assessment of environmental degradation, pollution and recovery: Lectures of a course held at the joint Research Center, Ispra Italy 12-16 octuber 1987. Elsevier.

Чикаго стиль цитування (17-те видання)

Ravera, Oscar. Ecological Assessment of Environmental Degradation, Pollution and Recovery: Lectures of a Course Held at the Joint Research Center, Ispra Italy 12-16 Octuber 1987. Amsterdam: Elsevier, 1989.

Стиль цитування MLA (9-ме видання)

Ravera, Oscar. Ecological Assessment of Environmental Degradation, Pollution and Recovery: Lectures of a Course Held at the Joint Research Center, Ispra Italy 12-16 Octuber 1987. Elsevier, 1989.