Cita APA (7a ed.)

Heald, H. T. (1970). The world of the engineer. Voice of America forum lectures.

Cita Chicago Style (17a ed.)

Heald, Henry T. The World of the Engineer. Washington: Voice of America forum lectures, 1970.

Cita MLA (8a ed.)

Heald, Henry T. The World of the Engineer. Voice of America forum lectures, 1970.