Persing. (1928). Elementary science by grades: By Ellis C. Persing and Elizabeth K. Peeples ; col. ill. by R. Bruce Horsfall. New York D. Appleton and Co 1928.
Chicago-стиль цитированияPersing. Elementary Science By Grades: By Ellis C. Persing and Elizabeth K. Peeples ; Col. Ill. By R. Bruce Horsfall. New York D. Appleton and Co 1928, 1928.
MLA-цитированиеPersing. Elementary Science By Grades: By Ellis C. Persing and Elizabeth K. Peeples ; Col. Ill. By R. Bruce Horsfall. New York D. Appleton and Co 1928, 1928.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.