Östreicher, R., & Seifert, W. (1989). Circular polarimetry of magnetically strongly shifted Hα components in the AM Her system EF Eri. Astrophysics with modern technology: space-based and ground-based systems.
Chicago Style (17th ed.) CitationÖstreicher, Roland, and Walter Seifert. "Circular Polarimetry of Magnetically Strongly Shifted Hα Components in the AM Her System EF Eri." Astrophysics with Modern Technology: Space-based and Ground-based Systems 1989.
MLA (9th ed.) CitationÖstreicher, Roland, and Walter Seifert. "Circular Polarimetry of Magnetically Strongly Shifted Hα Components in the AM Her System EF Eri." Astrophysics with Modern Technology: Space-based and Ground-based Systems, 1989.
Warning: These citations may not always be 100% accurate.