11 The implications of the proposition have been considered in detail by a number of academic writers (Standard Contract for Sale of Land in New South Wales, Butt 1985 ed, at 534 - 535, Vourmard, The Sale of Land, 1995 5 ed, at [12 250], Moss, Sale of Land in New South Wales, 1973 ed, at 428 - 429, The Standard Land Contract in Queensland, W D Duncan, H A Weld 3 ed at 334) and was, in all probability, the origin of resale time clauses being included in contracts governed by the Transfer of Land Act 1958 (Vic), Table A, cl 6(3), the Transfer of Land Act 1893 - 1959 (WA) (Sch26, Condition 6), and the Standard Contract adopted by the Law Society of New South Wales, cl 9 (Butt (supra) at lxxvii (Butterworths Conveyancing Service 10250)). It is said that those enactments or adoptions reinforce the validity of the proposition as stated by the High Court in Cooper v Ungar (supra) and that the time frame adopted in those enactments or adoptions (12 - 24 months) provide an appropriate test of reasonableness.