Forsse, E. (1989). Migration in bark bettles: With special reference to the spruce bark beetle lps typographus. Sveriges lantbruksuniversitet.
Citace podle Chicago (17th ed.)Forsse, Erik. Migration in Bark Bettles: With Special Reference to the Spruce Bark Beetle Lps Typographus. Uppsala: Sveriges lantbruksuniversitet, 1989.
Citace podle MLA (8th ed.)Forsse, Erik. Migration in Bark Bettles: With Special Reference to the Spruce Bark Beetle Lps Typographus. Sveriges lantbruksuniversitet, 1989.
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