Cita APA (7a ed.)

WEIR, C. (1977). XERTICAL ASCEN ADVENTURES OF HELICOPTER PILOT. HARCOURT BRACE.

Cita Chicago Style (17a ed.)

WEIR, CHARLES. XERTICAL ASCEN ADVENTURES OF HELICOPTER PILOT. CANADA: HARCOURT BRACE, 1977.

Cita MLA (9a ed.)

WEIR, CHARLES. XERTICAL ASCEN ADVENTURES OF HELICOPTER PILOT. HARCOURT BRACE, 1977.