APA

Wika S., Wozniak G., . (2007). Threats, protection and transformation of vegetation of the Upper Silesia and adjacent areas. Katowice: Upper Silesian Nature Heritage Centre.

Chicago

Wika Stanislaw, Wozniak Gabriela, . 2007. Threats, protection and transformation of vegetation of the Upper Silesia and adjacent areas. Katowice: Upper Silesian Nature Heritage Centre.

Harvard

Wika S., Wozniak G., . (2007). Threats, protection and transformation of vegetation of the Upper Silesia and adjacent areas. Katowice: Upper Silesian Nature Heritage Centre.

MLA

Wika Stanislaw, Wozniak Gabriela, . Threats, protection and transformation of vegetation of the Upper Silesia and adjacent areas. Katowice: Upper Silesian Nature Heritage Centre. 2007.