1. Variation and hybridization among the Paradise Flycatchers of Africa.;Chapin;Evolution,1948
2. The Birds of the Belgian Congo;Chapin;Part 3. Bull. Amer. Mus. Nat. Hist.,1953
3. What is Tchitrea melampyra Hartlaub, 1857 ? Bull.;Chapin;Brit. Orn. Club,1961
4. Birds from Gabon and Moycn Congo;Rand;Fieldiana: Zoology,1959
5. Die Vogelfauna des mittelafrikanischen Seengebietes.;Reichenow;Wiss. Ergeb. Deutschen Zentral-Afrika Exp.,1911