Fisher, R. J., & Hyslop, R. B. (1980). Index to Building blocks by Hyslop. s.n..
Cita Chicago Style (17a ed.)Fisher, Raymond J., y Robert B. Hyslop. Index to Building Blocks by Hyslop. [S.l.: s.n., 1980.
Cita MLA (8a ed.)Fisher, Raymond J., y Robert B. Hyslop. Index to Building Blocks by Hyslop. s.n., 1980.
Precaución: Estas citas no son 100% exactas.