Dyfyniad APA

American Institute of Biological Sciences. Biological Sciences Curriculum Study. Committee on Innovation in Laboratory Instruction. (1961). High school biology: A laboratory block (Rev. ed.). Johnson.

Dyfyniad Arddull Chicago

American Institute of Biological Sciences. Biological Sciences Curriculum Study. Committee on Innovation in Laboratory Instruction. High School Biology: A Laboratory Block. Rev. ed. [Boulder, Colo.: Johnson, 1961.

Dyfyniad MLA

American Institute of Biological Sciences. Biological Sciences Curriculum Study. Committee on Innovation in Laboratory Instruction. High School Biology: A Laboratory Block. Rev. ed. Johnson, 1961.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.