Hansen, R., Newman, E., Penrose, R., & Tod, K. (1978). METRIC AND CURVATURE PROPERTIES OF H-SPACE.
Lua i Stíl Chicago (17ú heag.)Hansen, R., E. Newman, R. Penrose, agus K. Tod. METRIC AND CURVATURE PROPERTIES OF H-SPACE. 1978.
Lua MLA (9ú heag.)Hansen, R., et al. METRIC AND CURVATURE PROPERTIES OF H-SPACE. 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.