APA

Dahlén G., . (1980). Studies on lipopolysaccharides from oral Gram-negative anaerobic bacteria in relation to apical periodontitis. Göteborg: .

Chicago

Dahlén Gunnar, . 1980. Studies on lipopolysaccharides from oral Gram-negative anaerobic bacteria in relation to apical periodontitis. Göteborg: .

Harvard

Dahlén G., . (1980). Studies on lipopolysaccharides from oral Gram-negative anaerobic bacteria in relation to apical periodontitis. Göteborg: .

MLA

Dahlén Gunnar, . Studies on lipopolysaccharides from oral Gram-negative anaerobic bacteria in relation to apical periodontitis. Göteborg: . 1980.