Tourist Research & Planning T.R.P.Ltd Zug Switzerland. (1978). Manila portfolio. Tourist Research & planning T.R.P.Ltd Zug.
Chicagoスタイル(17版)引用形式Tourist Research & Planning T.R.P.Ltd Zug Switzerland. Manila Portfolio. [Switzerland]: Tourist Research & planning T.R.P.Ltd Zug, 1978.
MLA(9版)引用形式Tourist Research & Planning T.R.P.Ltd Zug Switzerland. Manila Portfolio. Tourist Research & planning T.R.P.Ltd Zug, 1978.
警告: この引用は必ずしも正確ではありません.