Gaya APA

Smith, K, , , , , , , , M., Holroyd, P. (1969). Engineering principles for electrical technicians (1969). : Oxford : Pergamon Press,.

Gaya MLA

Smith, K, , , , , , , , M,., Holroyd, P.. "Engineering principles for electrical technicians". 1969 : Oxford : Pergamon Press,, 1969. Text.