Lua APA (7ú heag.)

MURIE, O. J. (1974). A field guide to animal tracks.-- ed.2. Houghton Mifflin co.

Lua i Stíl Chicago (17ú heag.)

MURIE, Olaus Johan. A Field Guide to Animal Tracks.-- Ed.2. Boston: Houghton Mifflin co, 1974.

Lua MLA (9ú heag.)

MURIE, Olaus Johan. A Field Guide to Animal Tracks.-- Ed.2. Houghton Mifflin co, 1974.

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